A curated directory of companies building quantum technology: quantum computing, sensing, communication, security, and the components that make it all work.
722 organizations tracked across 8 sectors and 40 countries. Last updated: 2026-06-25.
This list covers pure-play startups and scale-ups, publicly traded quantum companies (marked 📈), university spin-outs, and the quantum divisions of large technology and enterprise organizations (listed separately). It is auto-generated from data/startups.json; see Contributing to add or fix an entry.
- Quantum Computing Hardware (94)
- Software, Algorithms & Error Correction (90)
- Cloud & Access Platforms (18)
- Quantum Sensing & Metrology (69)
- Quantum Communication & Networking (51)
- Quantum Security & Post-Quantum Cryptography (85)
- Components & Enabling Technologies (186)
- Applications, Consulting & Services (93)
- Big Tech & Large-Enterprise Quantum Initiatives (36)
- Publicly Traded Pure-Play Quantum Companies (50)
- Statistics
- Related Lists & Resources
- Contributing
- Disclaimer
- License
Companies building quantum processors and full-stack quantum computers, across every qubit modality.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Aegiq | Sheffield, United Kingdom | 2019 | photonic · Full-stack photonic quantum computing & single-photon sources | Builds deterministic single-photon sources and a full-stack photonic quantum computing platform; U. Sheffield spinout. |
| Alice & Bob | Paris, France | 2020 | superconducting · Cat-qubit processors | Superconducting cat-qubit quantum processors targeting hardware-efficient fault tolerance. |
| Anyon Systems | Dorval, Canada | 2014 | superconducting · Full-stack superconducting computers | Vertically integrated full-stack superconducting quantum computers (Qube/MonarQ), built and integrated in-house. |
| AQT (Alpine Quantum Technologies) | Innsbruck, Austria | 2018 | trapped-ion · Quantum computers | Trapped-ion quantum computers in 19-inch racks at room temperature with cloud access. |
| Archer Materials 📈 | Adelaide, Australia | 2007 | spin/silicon · room-temperature carbon qubit chip | ASX-listed firm developing the carbon-based 12CQ room-temperature qubit chip alongside A1 Biochip products. |
| Arque Systems | Aachen, Germany | 2022 | spin/silicon · Quantum computers | Silicon spin-qubit quantum computing hardware with integrated on-chip cryo-CMOS control. |
| Atlantic Quantum (acquired by Google, 2025) | Cambridge, MA, United States | 2022 | superconducting · Superconducting fluxonium | Superconducting fluxonium qubits with co-located cryogenic control electronics; MIT (EQuS) spinout. |
| Atom Computing | Berkeley, CA, United States | 2018 | neutral-atom · Full-stack neutral-atom | Neutral-atom quantum computing; first platform to surpass 1,000 physical qubits; partners with Microsoft. |
| BardeenQ Labs (unverified) | Houston, Texas, United States | 2019 | Room-temperature quantum hardware | Develops room-temperature quantum machines and spins out subsidiary quantum-tech startups ('Roivant for quantum') for Industry 4.0. |
| Bleximo (defunct) | Berkeley, CA, United States | 2017 | superconducting · Superconducting accelerators | Application-specific superconducting quantum accelerators; co-designs hardware/software for targeted problems. |
| Bose Quantum / QBoson (玻色量子) | Beijing, China | 2020 | photonic · Coherent photonic Ising machines | Builds room-temperature coherent photonic quantum computers (optical Ising machines) for optimization problems. |
| Buchou Quantum (不筹量子) | Shanghai, China | 2025 | neutral-atom · Neutral-atom quantum computing | Neutral-atom quantum computing company spun off from Fudan University (Li Xiaopeng's lab). |
| C12 Quantum Electronics | Paris, France | 2020 | spin/silicon · Carbon-nanotube spin qubits | Quantum processors based on electron spins in suspended carbon nanotubes. |
| CAS Cold Atom Technology / Zhongke Kuyuan (中科酷原) | Wuhan, China | 2020 | neutral-atom · Neutral-atom quantum computers & atomic gravimeters | Builds neutral-atom quantum computers (Hanyuan series) and portable cold-atom quantum gravimeters; CAS Wuhan spinout. |
| Creotech Instruments / Creotech Quantum 📈 | Piaseczno (Warsaw area), Poland | 2012 | superconducting · Quantum control electronics / quantum computer | Polish maker of quantum control electronics, QKD and a domestic superconducting quantum computer for the EU. |
| Crystal Quantum Computing | Paris, France | 2021 | trapped-ion · Rydberg trapped-ion processors | Trapped-ion quantum computer combining ion-crystal stability with fast Rydberg gates. |
| D-Wave Quantum 📈 | Palo Alto, CA, United States | 1999 | annealing · Annealing + gate-model | World's first commercial quantum computer supplier; quantum annealing (Advantage) plus an emerging gate-model roadmap. |
| Diraq | Sydney, Australia | 2022 | spin/silicon · Silicon spin qubits | UNSW spinout building silicon-CMOS spin-qubit processors on standard semiconductor fabs; led by Andrew Dzurak. |
| Duality Quantum Photonics | Bristol, United Kingdom | 2020 | photonic · Integrated quantum photonic processors | Integrated photonic processors and chips for quantum computing; University of Bristol-linked spinout. |
| e-Spin (易思旋磁) | Shanghai, China | 2024 | spin/magnetic · Spintronic / magnetic combinatorial-optimization chips | Develops room-temperature 'magnetic' (spintronic) combinatorial-optimization chips; quantum-inspired approach. |
| EeroQ | Chicago, IL, United States | 2016 | electron-on-helium · Electron-on-helium qubits | Builds quantum processors using electrons trapped on superfluid helium, a CMOS-compatible approach. |
| eleQtron | Siegen, Germany | 2020 | trapped-ion · Quantum computers | Trapped-ion quantum computers using microwave/RF-controlled MAGIC technology instead of lasers. |
| Equal1 | Dublin, Ireland | 2017 | spin/silicon · Silicon spin qubits | CMOS silicon spin-qubit quantum chips; UnityQ system-on-chip integrates quantum and classical components. |
| Groove Quantum | Delft, Netherlands | 2024 | spin/silicon · Germanium spin qubits | Germanium-based spin-qubit quantum processors compatible with semiconductor manufacturing. |
| HRL Laboratories | Malibu, CA, United States | 1948 | spin/silicon · Silicon spin qubits | Research lab demonstrating universal control of encoded silicon (Si/SiGe) spin qubits via voltage pulses. |
| Hyqubit (华翊量子 / Huayi Quantum) | Beijing, China | 2022 | trapped-ion · Ion-trap quantum processors | Develops trapped-ion quantum processors and cloud; Tsinghua spinout from Duan Luming's group, 100+ qubit systems. |
| infinityQ Technology | Montreal, Canada | 2020 | analog · Room-temperature analog computing | Room-temperature quantum-analog computing hardware (infinityQube) targeting optimization problems. |
| Infleqtion 📈 | Louisville, CO, United States | 2007 | neutral-atom · Full-stack neutral-atom + sensing | Cold-atom firm: Tiqker optical clock, Rydberg RF sensors, inertial sensing, and neutral-atom computing (Superstaq SW). |
| IonQ 📈 | College Park, MD, United States | 2015 | trapped-ion · Full-stack trapped-ion | First pure-play public quantum company; builds trapped-ion processors (Forte, Tempo) and quantum networking systems. |
| IQM Quantum Computers | Espoo, Finland | 2018 | superconducting · Quantum computers | Builds full-stack superconducting quantum computers for HPC centres and research. |
| Jiuzhang Quantum (九章量子) | Jinan, China | 2022 | photonic · Photonic boson-sampling processors | Name tied to USTC's Jiuzhang photonic boson-sampling processors; no confirmed commercial company of this name. |
| Liangyi Wanxiang / Atom to Infinity (两仪万象) | Beijing, China | 2024 | neutral-atom · Neutral-atom quantum computers | Full-stack neutral-atom quantum computer startup spun out of Tsinghua University; first machine targeted ~2027. |
| LogicBit (逻辑比特) | Hangzhou, China | 2024 | superconducting · Error-correctable superconducting chips | Develops error-correctable superconducting quantum chips and QEC systems; Zhejiang University spinout. |
| MatriQ / Atomic Matrix (原子矩阵) | Hangzhou, China | 2025 | neutral-atom · Neutral-atom Rydberg quantum computers | Full-stack Rydberg dynamic tweezer-array neutral-atom quantum computers; from USTC/Pan Jianwei-linked team. |
| Nanofiber Quantum Technologies (NanoQT) | Tokyo, Japan | 2022 | neutral-atom · Nanofiber cavity-QED neutral-atom QC | Nanofiber cavity-QED interconnects for modular/networked neutral-atom quantum processors. |
| neQxt | Erlenbach am Main, Germany | 2022 | trapped-ion · Quantum computers | Full-stack trapped-ion quantum computing systems, hardware and software. |
| Nord Quantique | Sherbrooke, Canada | 2020 | superconducting · Bosonic error-corrected qubits | Fault-tolerant superconducting quantum computers using bosonic (cavity) qubits for hardware-efficient error correction. |
| OptQC Corp. | Tokyo, Japan | 2021 | photonic · Room-temperature optical quantum computer | Builds scalable room-temperature optical quantum computers using time-domain multiplexing (UTokyo Furusawa Lab). |
| Oratomic | Pasadena, CA, United States | 2026 | neutral-atom · Full-stack neutral-atom | Neutral-atom startup building utility-scale, fault-tolerant quantum computers; founded by Caltech/Harvard pioneers. |
| ORCA Computing | London, United Kingdom | 2019 | photonic · Room-temperature photonic quantum computing | Full-stack photonic quantum computers (PT-1/PT-2) using telecom-grade components and quantum memories; Oxford spinout. |
| Origin Quantum (本源量子) | Hefei, China | 2017 | superconducting · Full-stack superconducting quantum computers | China's leading full-stack superconducting quantum computer maker; builds chips, control electronics, software and Wukong cloud machine. |
| Oxford Ionics (acquired by IonQ, 2025) | Oxford, United Kingdom | 2019 | trapped-ion · Trapped-ion-on-a-chip | Trapped-ion quantum computing with electronic qubit control on silicon chips; Oxford University spinout. |
| Oxford Quantum Circuits | Reading, United Kingdom | 2017 | superconducting · Superconducting | Superconducting quantum processors using its proprietary Coaxmon 3D architecture, offered as Quantum-Compute-as-a-Service; Oxford University spinout. |
| Pasqal | Massy, France | 2019 | neutral-atom · Quantum processors | Neutral-atom quantum processors and analog/digital quantum computers; going public via Bleichroeder SPAC. |
| Peak Quantum | Munich, Germany | 2024 | superconducting · Quantum computers | Inherently error-protected superconducting quantum processors aimed at scalable fault tolerance. |
| Photonic Inc. | Burnaby, Canada | 2016 | spin/silicon · Silicon spin-photon qubits | Builds networking-first silicon-spin (T-centre) quantum systems with telecom-band photonic links for distributed networks. |
| Planckian | Pisa, Italy | 2023 | superconducting · Superconducting QPUs / quantum batteries | Develops superconducting quantum processors with shared-control architecture, plus quantum-battery energy tech. |
| planqc | Garching, Germany | 2022 | neutral-atom · Quantum computers | Neutral-atom quantum computers using atoms in optical lattices; MPQ spinout targeting large-scale systems. |
| PsiQuantum | Palo Alto, CA, United States | 2015 | photonic · Full-stack photonic | Building a fault-tolerant photonic quantum computer using silicon photonics (Omega) made at GlobalFoundries. |
| Q-Factor | Tel Aviv, Israel | 2025 | neutral-atom · Neutral-atom quantum computing | Neutral-atom quantum computing startup aiming to scale beyond one million qubits via a new system architecture. |
| Qarakal Quantum | Tel Aviv, Israel | 2023 | superconducting · Full-stack superconducting QPUs | Full-stack superconducting quantum company building QPUs and a software stack for novel gates and circuits. |
| QC82 | Charlottesville, VA, United States | 2022 | photonic · Photonic continuous-variable | Integrated photonic chips for room-temperature fault-tolerant quantum computing; continuous-variable approach. |
| QDaria | Oslo, Norway | 2025 | topological · Topological/software | Early-stage startup pursuing topological (Fibonacci-anyon) quantum computing plus quantum AI software. |
| Qilimanjaro Quantum Tech | Barcelona, Spain | 2019 | superconducting · Analog/superconducting full-stack quantum computers | Builds analog and superconducting full-stack quantum computers; contributing to Spain's quantum computer at BSC. |
| QpiAI | Bengaluru, India | 2019 | superconducting · Full-stack superconducting quantum computer | Full-stack quantum + AI firm; built India's first 25-qubit superconducting computer (QpiAI-Indus) under National Quantum Mission. |
| QuamCore | Herzliya, Israel | 2022 | superconducting · Scalable superconducting architecture | Designs a superconducting architecture targeting one million qubits in a single cryostat via in-cryostat control logic. |
| Quandela Quantum (Canada) | Montreal, Canada | 2017 | photonic · Photonic quantum computers | Photonic quantum computers from single-photon sources; Belenos (12-qubit) and Canopus (24-qubit) systems. |
| Quanfluence | Bengaluru, India | 2021 | photonic · Photonic/optical Ising machines | Photonics-based optical Ising machines and quantum-inspired hardware for high-speed optimization problems. |
| QUANTier | Hong Kong, Hong Kong | 2022 | neutral-atom · Neutral-atom quantum processors | Builds room-temperature neutral-atom QPUs using laser-controlled atoms, delivered via cloud. |
| Quantinuum 📈 | Broomfield, CO, United States | 2021 | trapped-ion · Full-stack trapped-ion | Full-stack trapped-ion company (TKET compiler) formed by merging Honeywell Quantum Solutions and Cambridge Quantum. |
| Quantum Art | Ness Ziona, Israel | 2022 | trapped-ion · Trapped-ion multi-core quantum computers | Builds parallelized, reconfigurable multi-core trapped-ion quantum computers with multi-qubit gates and all-to-all connectivity. |
| Quantum Brilliance | Stuttgart, Germany | 2019 | NV-center/diamond · Quantum computers | ANU spinout building room-temperature diamond NV-center quantum accelerators. |
| Quantum Circuits Inc. (acquired by D-Wave, 2026) | New Haven, CT, United States | 2015 | superconducting · Superconducting dual-rail | Dual-rail cavity superconducting qubits with hardware-level error detection; Yale (Schoelkopf/Devoret) spinout. |
| Quantum Computing Inc. (QCi) 📈 | Hoboken, NJ, United States | 2018 | photonic · Photonic optimization / room-temp | Photonic 'Entropy Quantum Computing' optimization machines (Dirac series) and thin-film lithium niobate photonic chips. |
| Quantum Fabrix | Kidlington (Oxford), United Kingdom | 2024 | trapped-ion · Trapped-ion | University of Oxford spinout building modular trapped-ion quantum hardware and atomic sources. |
| Quantum Motion | London, United Kingdom | 2017 | spin/silicon · Silicon CMOS spin qubits | Silicon spin-qubit quantum processors built with standard 300mm CMOS processes; UCL/Oxford spinout. |
| Quantum Source | Rehovot, Israel | 2021 | photonic · Photonic fault-tolerant quantum computing | Photonic fault-tolerant quantum computers using single atoms on photonic chips for deterministic atom-photon gates (ORIGIN engine). |
| Quantum Transistors | Herzliya, Israel | 2022 | spin/silicon · Solid-state qubit processors | Develops single-chip solid-state quantum processors (now diamond-based) with native photonic interconnects for data centers. |
| QuantWare | Delft, Netherlands | 2021 | superconducting · Superconducting QPU foundry | Foundry services for superconducting quantum processors and VIO 3D vertical-interconnect chip technology. |
| Qubitcore | Yokohama, Japan | 2024 | trapped-ion · Distributed ion-trap quantum computer | OIST spin-out building Japan's first domestically developed distributed trapped-ion quantum computer. |
| Qudoor / Qike Quantum (国开科量子) | Beijing, China | 2019 | trapped-ion · Ion-trap quantum computers | Chinese trapped-ion quantum computing firm building modular ion-trap machines plus quantum-comms devices, software and cloud. |
| QUDORA Technologies | Braunschweig, Germany | 2021 | trapped-ion · Quantum computers | Full-stack trapped-ion quantum computers and standalone quantum processors. |
| QuEra Computing | Boston, MA, United States | 2018 | neutral-atom · Full-stack neutral-atom | Neutral-atom quantum computers (Aquila on Braket); Harvard/MIT spinout, leader in logical-qubit error correction. |
| QuiX Quantum | Enschede, Netherlands | 2019 | photonic · Photonic quantum processors | Room-temperature photonic quantum processors; building a universal photonic quantum computer. |
| Quobly | Grenoble, France | 2022 | spin/silicon · Silicon spin qubits | Silicon spin-qubit quantum processors using FD-SOI semiconductor manufacturing with STMicroelectronics. |
| Rigetti Computing 📈 | Berkeley, CA, United States | 2013 | superconducting · Full-stack superconducting | Public full-stack company building superconducting tunable-transmon QPUs in its own Fab-1 (Ankaa, modular chips). |
| Rotonium | Gemona del Friuli, Italy | 2022 | photonic · Single-photon qudit photonic computers | Builds miniaturized room-temperature photonic quantum computers using single-photon qudit (OAM) tech for edge and space. |
| SaxonQ | Leipzig, Germany | 2021 | NV-center/diamond · Quantum computers | Mobile, room-temperature diamond NV-center quantum computers for on-site deployment. |
| SDT Inc. | Seoul, South Korea | 2018 | superconducting · Superconducting + photonic hardware | Builds superconducting quantum computers (Kreo) and quantum-AI hybrid data centers; also photonic hardware. |
| SEEQC | Elmsford, NY, United States | 2019 | superconducting · Digital superconducting / SFQ | Digital full-stack quantum computers using Single Flux Quantum (SFQ) control chips; operates a superconductor foundry. |
| SemiQon | Espoo, Finland | 2023 | spin/silicon · Silicon CMOS quantum processors | Develops scalable silicon (CMOS) quantum processors and cryo-CMOS chips aimed at the million-qubit era. |
| Silicofeller | New Delhi, India | 2021 | superconducting · Superconducting quantum processors | Builds indigenous superconducting quantum processors; developed Kohinoor, an early Indian 4-qubit superconducting chip. |
| Silicon Quantum Computing (SQC) | Sydney, Australia | 2017 | spin/silicon · full-stack quantum computing | UNSW spinout building atomically precise phosphorus-in-silicon quantum processors, led by Michelle Simmons. |
| SmartLight Quantum (香港智光量子) | Hong Kong, Hong Kong | 2024 | photonic · Optical quantum computing | Develops core hardware, algorithms and system integration for optical (photonic) quantum computers. |
| SpinQ Technology (量旋科技) | Shenzhen, China | 2018 | superconducting · Desktop NMR & superconducting quantum computers | Builds compact NMR education quantum computers plus industrial-grade superconducting systems up to ~20 qubits, plus a chip foundry. |
| Sygaldry Technologies | Ann Arbor, MI, United States | 2024 | multi-modal · Quantum-accelerated AI | Building quantum-accelerated AI servers combining multiple qubit modalities for fault-tolerant compute. |
| Taiyi Quantum (太一量子) | Shanghai, China | 2026 | neutral-atom · Ytterbium neutral-atom quantum computers | Builds ytterbium neutral-atom quantum computers; founded by former Microsoft chief quantum architect Liu Hongbin. |
| TreQ | Milton Park, Oxfordshire, United Kingdom | 2023 | Quantum systems engineering / integration | Designs, builds and operates custom open-architecture, multi-vendor quantum computing systems. |
| TuringQ (图灵量子) | Shanghai, China | 2021 | photonic · Integrated photonic quantum chips | Develops lithium-niobate/silicon photonic quantum chips, photonic processors and supporting software; SJTU spinout. |
| Universal Quantum | Brighton, United Kingdom | 2018 | trapped-ion · Modular trapped-ion (QCCD) computers | Modular microwave-driven trapped-ion quantum computers with electric-field interconnects; U. Sussex spinout. |
| Xanadu Quantum Technologies 📈 | Toronto, Canada | 2016 | photonic · Photonic quantum computing | Photonic quantum computers using squeezed light; maker of PennyLane open-source QML framework. |
| XeedQ | Leipzig, Germany | 2021 | NV-center/diamond · Diamond NV | Compact room-temperature diamond NV-center quantum computers for on-premise use. |
| Yaqumo | Tokyo, Japan | 2025 | neutral-atom · Cold-atom quantum computer | Spinoff from Kyoto University / IMS cold-atom groups developing neutral-atom quantum computers. |
| ZuriQ | Zurich, Switzerland | 2023 | trapped-ion · Quantum computers | Scalable 2D trapped-ion (Penning micro-trap) quantum processors for improved qubit connectivity. |
SDKs, compilers, simulators, error-correction, and algorithm/middleware developers (hardware-agnostic).
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| 1QBit (1QB Information Technologies) | Vancouver, Canada | 2012 | Quantum software & algorithms | One of the first dedicated quantum software companies; hardware-agnostic algorithms and optimization software. |
| 4colors Research | Cambridge, United Kingdom | 2016 | Optimization algorithms / R&D consultancy | Algorithmic R&D consultancy building hybrid classical-quantum solvers for optimization problems. |
| AbaQus | Vancouver, BC, Canada | 2021 | Finance algorithms | Quantum platform for financial services: risk analysis, optimization and Monte Carlo on QPUs. |
| Agnostiq (acquired by DataRobot, 2025) | Toronto, Canada | 2018 | Hybrid HPC/quantum workflow orchestration | Maker of open-source Covalent orchestration for hybrid HPC/quantum/AI workloads across heterogeneous backends. |
| Algorithmiq | Milan, Italy | 2020 | Quantum algorithms for life sciences | Quantum software for chemistry and life sciences; industrializes quantum algorithms and error mitigation on real hardware. |
| AngelQ Quantum Computing | Singapore, Singapore | Architecture-agnostic quantum software | Architecture-agnostic quantum and quantum-inspired software for finance, energy and supply chain. | |
| Aqarios | Munich, Germany | 2021 | Middleware | Optimization and quantum software platform (Luna) for planning, scheduling and combinatorial problems. |
| aQuantum | Madrid, Spain | 2019 | Quantum software engineering / development platform | Quantum software engineering and consulting; offers QuantumPath, a quantum application lifecycle platform. |
| ArcLight Quantum (弧光量子) | Beijing, China | 2024 | Quantum EDA & control software | Quantum EDA, program-development platforms, quantum ML tools and measurement/control software. |
| Automatski | Bengaluru, India | 2014 | Quantum-inspired algorithms / simulators | R&D firm offering quantum/quantum-inspired simulators, annealers and optimization software; claims unverified large-qubit systems. |
| BEIT | Krakow, Poland | 2016 | Quantum algorithms / computational chemistry | Develops hardware-agnostic quantum algorithms for hard combinatorial problems and quantum-accelerated molecular modelling. |
| Bloq Quantum | Kollam, India | 2024 | Low-code quantum SDK | Low-code/no-code platform that simplifies quantum algorithm development for enterprises. |
| blueqat | Tokyo, Japan | 2008 | Quantum SDK + cloud | One of Japan's longest-running quantum software firms; blueqat SDK, cloud platform and developer community. |
| BlueQubit | San Francisco, CA, United States | 2022 | Quantum software / QML platform | Quantum-software-as-a-service platform with QPU/GPU emulators for ML, finance and enterprise use cases. |
| BosonQ Psi (BQP) | Syracuse, United States | 2020 | Quantum/quantum-inspired simulation software | Quantum-accelerated engineering simulation platform (BQPhy) for aerospace, automotive, energy and manufacturing. |
| CatQ | Canberra, Australia | photonic error correction | ANU spinout developing optical/photonic quantum error correction that pre-emptively corrects errors. | |
| Classiq | Tel Aviv, Israel | 2020 | Quantum software / circuit synthesis | High-level quantum development platform (IDE, compiler) that synthesizes optimized circuits from high-level specifications. |
| Cogniframe | Toronto, Canada | 2016 | Quantum software platform | Hybrid quantum software platform (FirstQ app store) for enterprise optimization, ML and simulation. |
| Conductor Quantum | San Francisco, CA, United States | 2024 | spin/silicon · AI control/calibration | Hardware-agnostic AI software for quantum computer calibration and natural-language control. |
| Dynamiqs | Paris, France | 2024 | Quantum simulation library | Open-source GPU-accelerated, differentiable quantum-dynamics simulation library (JAX). |
| Elyah | Dubai, United Arab Emirates | 2018 | Quantum SDK / circuit tools | Quantum software firm; builds the Qubit Workbench visual circuit IDE plus applied-quantum and PQC services. |
| Entangled Networks (acquired by IonQ, 2023) | Toronto, Canada | 2020 | Distributed/multi-core compilation | Software for scaling quantum computers via distributed multi-QPU architectures and compilation. |
| Entropica Labs | Singapore, Singapore | 2018 | Quantum error correction software | Builds the software layer for fault-tolerant quantum error correction; partners with Xanadu and Yaqumo. |
| ExaQ.ai | Singapore, Singapore | 2020 | Quantum machine learning software | Quantum machine-learning software, including the Polyadic QML library and ManyQ ML-optimized simulator. |
| Fermioniq | Amsterdam, Netherlands | 2021 | Quantum emulation software | Tensor-network quantum-circuit emulators (Ava) for simulating quantum algorithms on classical hardware. |
| finQbit | Lublin, Poland | 2023 | Finance algorithms | Hybrid classical-quantum financial risk-management and computation software for financial institutions. |
| First Quantum | Seoul, South Korea | 2022 | Quantum algorithms (CFD, finance) | Develops quantum algorithms for computational fluid dynamics, aerospace, climate and finance. |
| FirstQFM | Stockholm, Sweden | 2024 | AI foundation models for quantum | Develops patent-pending AI foundation models for qubit calibration and error mitigation across the quantum stack. |
| Haiqu | Palo Alto, California, United States | 2022 | Quantum middleware | Quantum middleware (Rivet toolkit) improving transpilation and noise resilience to run deeper circuits on NISQ hardware. |
| Horizon Quantum Computing 📈 | Singapore, Singapore | 2018 | Quantum compilers / programming tools | Quantum software and automated compilers (Triple Alpha); also operates its own quantum hardware testbed. |
| HQS Quantum Simulations | Karlsruhe, Germany | 2017 | Quantum chemistry software | Quantum simulation software for molecular and material properties in chemistry and materials. |
| Iceberg Quantum | Sydney, Australia | 2024 | quantum error correction | Quantum error-correction company building fault-tolerant architectures (Pinnacle) using qLDPC codes. |
| Inspiration-Q | Madrid, Spain | 2021 | Quantum-inspired algorithms / SaaS | SaaS for quantum-inspired and quantum algorithms targeting optimization, ML and finance. |
| Jij Inc. | Tokyo, Japan | 2018 | Optimization / annealing software | Develops Ising-model and quantum-annealing optimization software (OpenJij, JijZept) for industry. |
| JoS Quantum | Frankfurt, Germany | 2018 | Finance algorithms | Quantum and quantum-inspired algorithms for finance, insurance and energy markets. |
| Kipu Quantum | Karlsruhe, Germany | 2021 | Algorithms | Hardware-efficient, application-specific quantum algorithms for optimization and chemistry. |
| Kothar Computing | Montreal, Canada | 2024 | Quantum many-body simulation | FORGE browser-based platform solving quantum many-body problems via a proprietary Quantum Symbolic Algebraic Framework. |
| MagiQware | Delft, Netherlands | 2023 | Error correction / magic-state distillation | Magic-state distillation and AI-assisted optimization software for fault-tolerant quantum computing. |
| Memcomputing | San Diego, CA, United States | 2016 | Quantum-inspired optimization | Quantum-inspired memcomputing (MEMCPU) solvers for large-scale optimization and ML. |
| NanoAcademic Technologies | Montreal, Canada | 2008 | Quantum device simulation software | Atomistic and quantum-transport simulation software (QTCAD) for designing semiconductor qubit devices. |
| nextnano | Munich, Germany | 2012 | Semiconductor/quantum device simulation (TCAD) | TCAD software modeling quantum effects in semiconductor nanostructures, quantum dots and qubit devices. |
| nodeQ | York, United Kingdom | 2021 | Quantum network software | Software and orchestration for quantum networks, distributed QC and quantum-safe communications. |
| Norma Inc. | Seoul, South Korea | 2011 | Quantum software + PQC (Q Platform) | Quantum software (Q Platform/QPaaS) and PQC firm; building Qrion superconducting quantum computer. |
| Opacity | Sydney, Australia | 2020 | Fault detection / characterization | Software (Quiver) for fault detection and error identification in quantum processors beyond standard benchmarking. |
| Open Quantum Design (OQD) | Waterloo, Canada | 2023 | trapped-ion · Open-source full-stack quantum | Non-profit building the world's first open-source, full-stack trapped-ion quantum computer. |
| ORIENTOM | Seoul, South Korea | 2020 | Quantum software (finance) | Quantum software company focused on finance applications (portfolio optimization, risk, pricing). |
| ParityQC | Innsbruck, Austria | 2020 | Architecture/algorithms | Quantum architecture blueprints and optimization compilers (ParityOS) for problem encoding. |
| Phasecraft | London, United Kingdom | 2019 | Quantum algorithms for materials & chemistry | Hardware-agnostic quantum algorithms for materials, chemistry and optimization; UCL/Bristol spinout. |
| Piquasso | Budapest, Hungary | 2024 | Photonic simulation | Open-source photonic quantum computer simulation framework (Python/C++). |
| Q-CTRL | Sydney, Australia | 2017 | quantum control firmware | Quantum control/infrastructure software to stabilise qubits and suppress errors; also quantum-sensing navigation. |
| QBaltic | Riga, Latvia | 2019 | Quantum algorithms / cryptography / AI | Develops algorithms for quantum computing, quantum and post-quantum cryptography, and AI. |
| QC Design | Ulm, Germany | 2021 | Error correction / architecture design | Plaquette software to design, simulate and benchmark fault-tolerant quantum computing architectures. |
| QC Ware | Palo Alto, CA, United States | 2014 | Quantum algorithms & enterprise platform | Quantum/quantum-inspired algorithms and software; Forge platform and Promethium computational-chemistry product. |
| Qedma | Tel Aviv, Israel | 2020 | Quantum error suppression & mitigation | QESEM software learns each device's noise profile to suppress and mitigate errors, extending usable circuit sizes. |
| Qibo / Qrisp (Quantagonia-related) | Berlin, Germany | 2024 | High-level framework | Open-source high-level quantum programming framework (Eclipse Qrisp). |
| Qinara | Edinburgh, United Kingdom | 2025 | Quantum circuit optimization | Hybrid quantum-classical software incl. Qronos, a reinforcement-learning quantum circuit optimizer. |
| QMatter | London, United Kingdom | 2024 | Quantum problem compression | Software that compresses quantum problems to their essential core for drug discovery and materials. |
| QMill | Espoo, Finland | 2024 | Industrial quantum optimization algorithms | Develops NISQ-era quantum optimization algorithms targeting practical quantum advantage for industry. |
| QNT - Quantum Neural Technologies | Athens, Greece | 2021 | Quantum software / algorithms | Quantum software startup transforming high-level functional models into optimized quantum circuits; SaaS, quantum-neuron approach. |
| Qoherent | Markham, Canada | 2019 | AI/ML for radio; quantum ML R&D | Machine-learning software for intelligent software-defined radios; investigates quantum ML for RF. |
| Qomputing.AI | Mumbai, India | Quantum platform, tools & education | Quantum computing platform (circuit builder, 128-qubit simulator) plus education and faculty-development programs. | |
| Qoro Quantum | London, United Kingdom | 2024 | Quantum-HPC orchestration & middleware | Middleware and orchestration software for distributed quantum and HPC integration. |
| QPerfect (acquired by BTQ Technologies, 2025) | Strasbourg, France | 2023 | Quantum emulation / fault-tolerance software | Tensor-network quantum emulator (MIMIQ) and logical-unit software for fault-tolerant quantum computing; now part of BTQ. |
| Qruise | Saarbrücken, Germany | 2021 | ML calibration/control software | Machine-learning software for characterizing, calibrating and controlling quantum (and MR) devices. |
| QSIMPLUS | Seoul, South Korea | 2021 | Quantum communication simulator | Develops QSIMpro, a software simulator for quantum communication systems and networks; CES 2023 Innovation Award. |
| Quanmatic | Tokyo, Japan | 2022 | Quantum optimization software | Quantum/quantum-inspired optimization engines for industry; deployed in ROHM chip manufacturing (2024). |
| Quantagonia (acquired by Strangeworks, 2025) | Bad Homburg, Germany | 2021 | Optimization | Hybrid quantum-classical optimization platform (HybridSolver) for enterprise decision problems. |
| Quantastica | Helsinki, Finland | 2019 | Quantum software tools / transpilers | Builds software tools bridging classical and quantum computing: circuit transpilation, synthesis and conversion. |
| Quantistry | Berlin, Germany | 2018 | Quantum chemistry software | Cloud-based chemical/materials simulation platform combining quantum simulations, physics and ML. |
| QuantrolOx | Espoo, Finland | 2021 | AI tuning/control software | Machine-learning software (Quantum EDGE) for automated qubit tune-up, characterisation and control. |
| Quantum Benchmark (acquired by Keysight, 2021) | Kitchener, Canada | 2017 | Error characterization & suppression | Error characterization, suppression and performance-validation software (True-Q). |
| Quantum Elements | Los Angeles, United States | 2023 | AI-native quantum development platform | AI-native software stack (Constellation) with a noisy-qubit simulator to accelerate building and testing quantum applications. |
| Quantum Open Source Foundation (QOSF) | Toronto, Canada | 2018 | Open-source community | Non-profit supporting open-source quantum software development, education and mentorship. |
| Quantum Rings | Boulder, CO, United States | 2023 | Quantum circuit simulation | High-fidelity large-scale quantum circuit simulator and SDK running on standard classical hardware. |
| QuaSi (Quantum AI for Simulation) | Berlin, Germany | Quantum-classical HPC for CFD | Hybrid quantum-classical models (PINNs, DeepONets) as drop-in HPC accelerators for CFD and simulation bottlenecks. | |
| QuaTI (Quantum Technology and Information) | Sao Carlos, Brazil | 2020 | Hybrid quantum algorithms | Hybrid quantum-classical algorithms for extreme-weather prediction, drug development and disease diagnosis. |
| Qubitor | Singapore, Singapore | 2017 | Quantum ML / AI applications | Quantum computation lab/invention hub developing quantum applications, especially in machine learning and AI. |
| Qudyco | Pune, India | 2024 | Quantum simulation software & control | Builds QWorkbench light-matter simulation software, a quantum control box, plus education and consulting. |
| Quemix | Tokyo, Japan | 2019 | FTQC algorithms, chemistry/materials | R&D venture developing fault-tolerant quantum algorithms (PITE) for chemistry, materials and simulation. |
| Qulabs.ai | Hyderabad, India | 2018 | Quantum communication & computing software | Quantum communication and computing software stack; demonstrated a tabletop quantum memory in India. |
| QunaSys | Tokyo, Japan | 2018 | Quantum chemistry software | Quantum chemistry algorithms and software (Qamuy); maintains Qulacs open-source circuit simulator. |
| Qunova Computing | Daejeon, South Korea | 2021 | Quantum chemistry software | Quantum software for chemistry/drug discovery; HI-VQE algorithm reaching chemical accuracy on real hardware. |
| QuSoft | Amsterdam, Netherlands | 2015 | Quantum algorithms research | Dutch research center for quantum software and algorithms (CWI/UvA/VU). |
| Riverlane | Cambridge, United Kingdom | 2016 | Quantum error correction | Quantum error-correction decoder stack (Deltaflow/QEC) bridging hardware and software for fault tolerance. |
| Semicyber | McLean, VA, United States | 2018 | Applied quantum algorithms | Small woman-owned firm developing/applying quantum algorithms and data analytics for mission-critical problems. |
| Sigma-i | Tokyo, Japan | 2019 | Quantum annealing solutions | Tohoku University spinout delivering quantum-annealing optimization; major D-Wave cloud-access partner in Japan. |
| SoftwareQ (softwareQ Inc.) | Kitchener, Canada | 2017 | Compilers & quantum algorithms | Quantum compilers, circuit optimizers, simulators and software tools; co-founded by Michele Mosca and Vlad Gheorghiu. |
| Solid State AI | Toronto, Canada | 2017 | Manufacturing optimization | AIMS machine-learning and quantum-inspired software for advanced-manufacturing optimization. |
| Tokyo Quantum Computing | Tokyo, Japan | 2017 | Quantum annealing software | Reportedly develops integrated superconducting quantum hardware and software. |
| Zapata AI (Zapata Quantum) | Boston, MA, United States | 2017 | Quantum algorithms & orchestration | Quantum/quantum-inspired algorithm software (Orquestra) for chemistry, cryptography, pharma and ML. |
Cloud aggregators, orchestration layers, and access platforms that deliver quantum compute as a service.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Anaqor / PlanQK (acquired by Kipu Quantum, 2024) | Berlin, Germany | 2021 | Marketplace/platform | PlanQK quantum application marketplace and platform; community-powered quantum services. |
| Aqora | Paris, France | 2023 | Datasets, benchmarks & competitions platform | Platform hosting quantum datasets, benchmarks and use-case challenges for reproducible quantum research. |
| EPB Quantum | Chattanooga, Tennessee, United States | 2022 | Quantum computing & networking hub | Utility-operated commercial quantum computing and networking hub (with IonQ) offering access to quantum resources. |
| Fixstars Amplify | Tokyo, Japan | 2021 | Annealing optimization cloud | Cloud platform and SDK aggregating Ising/annealing machines for combinatorial optimization. |
| Groovenauts | Fukuoka, Japan | 2011 | AI + quantum no-code cloud | MAGELLAN BLOCKS no-code cloud delivering AI and quantum-annealing (D-Wave) optimization for commercial use. |
| Korea Quantum Computing (KQC) | Seoul, South Korea | 2022 | Quantum + AI access hub | IBM Quantum Innovation Center providing cloud quantum and AI (watsonx) access; deploying IBM Quantum System Two in Busan. |
| ParTec 📈 | Munich, Germany | 1999 | Quantum-HPC integration | Sovereign HPC-quantum integration; modular supercomputing software and full quantum-system integration. |
| Qapitan (defunct) | Barcelona, Spain | 2020 | Quantum API marketplace | Qubit-agnostic API marketplace/gateway connecting users to simulators and quantum hardware via RESTful APIs. |
| qBraid | Chicago, IL, United States | 2020 | Quantum cloud development platform | Cloud platform giving unified access to 30+ quantum devices and cross-framework SDK conversion; quantum dev environment. |
| QCentroid | Bilbao, Spain | 2022 | Quantum-as-a-Service marketplace / orchestration | Vendor-neutral Quantum-as-a-Service platform and marketplace to build, benchmark and deploy quantum solvers. |
| QMware | Rorschach, Switzerland | 2019 | Hybrid cloud | Hybrid quantum cloud platform merging HPC, GPU and virtual/native quantum processors. |
| Qnow | Sao Paulo, Brazil | 2022 | Quantum-as-a-Service | Quantum-as-a-Service (QaaS) platform with AI agents for finance, pharma, cybersecurity, materials and education. |
| QodeX Quantum | Chicago, United States | 2025 | Platform / quantum AI | Platform for quantum-native AI models, training and enterprise deployment at scale. |
| QuantumBasel | Arlesheim, Switzerland | 2022 | Access hub | Commercial quantum and AI hub offering access to IBM, D-Wave and IonQ systems plus expertise. |
| Qubrid AI | McLean, Virginia, United States | 2023 | Hybrid cloud platform | Hybrid GPU/QPU and AI cloud platform for development, simulation and deployment. |
| QuTwo | Helsinki, Finland | 2026 | Hybrid quantum-classical OS | QuTwo OS orchestration layer routing enterprise workloads across classical, quantum-inspired and quantum hardware. |
| Strangeworks | Austin, TX, United States | 2018 | Multi-vendor aggregation platform | Vendor-neutral platform aggregating QPU/HPC access, orchestration and solver management across multiple backends. |
| SuperQ Quantum Computing 📈 | Calgary, Canada | 2021 | Hybrid quantum/HPC access platform | Calgary firm whose 'Super' platform unifies quantum annealing, gate-based QC and HPC behind a chat-style interface. |
Quantum sensors, magnetometers, gravimeters, atomic clocks, timing, and quantum imaging.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Adamas Nanotechnologies | Raleigh, NC, United States | 2010 | NV-center/diamond · NV-diamond material/sensing | Fluorescent and NV-center diamond materials enabling quantum sensing and magnetometry. |
| Advanced Navigation | Sydney, Australia | 2012 | quantum-enhanced navigation/PNT | Builds AI-based inertial, photonic and quantum sensing navigation systems for sea, air, land and space. |
| AMCG | Seoul, South Korea | 2021 | Biomagnetic (MCG) magnetometry | Magnetocardiography scanning systems (MCG-S) using sensitive magnetometers for cardiac diagnostics. |
| AOSense | Sunnyvale, CA, United States | 2004 | neutral-atom · Cold-atom inertial sensing/gravimetry | Longest-running US cold-atom quantum sensing firm; atomic clocks, gravimeters and inertial sensors for defense and navigation. |
| Aquark Technologies | Southampton, United Kingdom | 2021 | Cold-atom sensors, atomic clocks | Miniaturised cold-atom hardware for compact quantum sensors, navigation and atomic clocks; Southampton spinout. |
| Atomionics | Singapore, Singapore | 2018 | neutral-atom · Atom-interferometry gravimeters | Cold-atom interferometry gravity/inertial sensors (Gravio) for GPS-denied navigation and resource exploration. |
| Cerca Magnetics | Nottingham, United Kingdom | 2020 | other · Optically pumped magnetometers / MEG brain scanners | Wearable OPM-MEG brain scanners; University of Nottingham spinout with Magnetic Shields Ltd. |
| CIQTEK (国仪量子) | Hefei, China | 2016 | NV-center/diamond · Quantum precision-measurement instruments | NV-diamond magnetometers, quantum diamond microscopes, EPR spectrometers, SEMs and dilution refrigerators. |
| Delta g | Birmingham, United Kingdom | 2023 | Quantum gravity gradiometry | Quantum gravity gradiometers for mapping underground features; University of Birmingham spinout. |
| DeteQt | Sydney, Australia | 2023 | NV-center/diamond · diamond magnetometers | Commercialises diamond-on-silicon (NV-center) quantum magnetometers for GPS-denied navigation and mineral exploration. |
| DIASENSE | Copenhagen, Denmark | 2024 | NV-center/diamond · Diamond quantum microscopy | Builds NV-diamond quantum magnetic microscopes for contactless defect detection in semiconductor chips. |
| Diffraqtion | Somerville, Massachusetts, United States | 2024 | Quantum imaging cameras | Develops a 'quantum camera' for ultra-high-resolution imaging satellites and telescopes; MIT/University of Maryland spinout. |
| Dobslit | Sao Carlos, Brazil | 2018 | Quantum sensors / metrology | Second-generation quantum sensing and measurement systems for precision metrology and geophysical surveying. |
| Entoptica | Hong Kong, Hong Kong | 2022 | photonic · Quantum/structured-light eye imaging | Quantum-inspired structured-light eye-diagnostic instruments for early detection of degenerative retinal disease. |
| Exail (Quantum, formerly Muquans/iXblue) 📈 | Saint-Germain-en-Laye, France | 2011 | cold-atom · Quantum sensors / metrology | Absolute quantum gravimeters (cold-atom) for geophysics and navigation; integrates former Muquans technology. |
| FieldLine | Boulder, CO, United States | 2017 | other · OPM magnetometers/MEG | Optically pumped magnetometer arrays and wearable OPM-MEG brain imaging systems. |
| Foqus Technologies | Waterloo, Canada | 2021 | Quantum-enhanced MRI | Quantum information algorithms and ML to enhance MRI signal/scan times; interfaces with existing MRI workstations. |
| Fraunhofer IAF Quantum Sensing | Freiburg, Germany | NV-center/diamond · NV-diamond magnetometry | Research institute developing NV-diamond and OPM magnetometers and quantum sensing services. | |
| Frequency Electronics 📈 | Mitchel Field, NY, United States | 1961 | Atomic clocks/timing | Precision atomic clocks and frequency/timing systems for satellites, defense and space. |
| GDQ Labs | Bengaluru, India | 2022 | Quantum magnetometers / magnetocardiography | Builds quantum magnetic sensors (MAGSENSE) for contactless magnetocardiography heart screening. |
| GEM Systems | Markham, ON, Canada | 1980 | Optically pumped/Overhauser magnetometers | Cesium optically pumped, Overhauser and proton-precession magnetometers for geophysics and exploration. |
| Genesis Quantum Technology (GQT) | Daejeon, South Korea | 2022 | Single-photon detection sensing | Single-photon detection (SPD/SPAD) for quantum sensing, biomarker detection and quantum infrastructure. |
| Geometrics | San Jose, CA, United States | 1969 | Optically pumped magnetometers | Cesium-vapor optically pumped magnetometers for geophysical, marine and UAV surveys. |
| Guosheng Quantum (国盛量子 / Anhui Guosheng) | Hefei, China | 2019 | NV-center/diamond · Industrial NV-diamond magnetometry | Markets itself as China's first industrial quantum-sensing firm; NV-diamond magnetometers for power-grid monitoring. |
| High Q Technologies | Waterloo, Canada | 2013 | superconducting sensors · Quantum scientific instruments | Quantum-enabled EPR spectrometers (FATHOM) using superconducting sensors for protein/drug research. |
| Kewei Quantum (科微量子) | Beijing, China | 2024 | Atomic clocks & Rydberg sensors | Atomic clocks and Rydberg-atom electromagnetic detection systems for spectrum monitoring and antenna characterization. |
| MAG4Health | Grenoble, France | 2021 | Medical quantum sensing (OPM-MEG) | Develops helium-4 optically-pumped-magnetometer MEG systems for clinical brain imaging at room temperature. |
| Magnicon | Hamburg, Germany | 2000 | SQUID magnetometers/electronics | SQUID sensors, magnetometers and readout electronics for ultra-low-noise magnetic measurement. |
| MEGIN | Espoo, Finland | 1989 | SQUID-MEG magnetometry | SQUID-based whole-head magnetoencephalography (MEG) systems (TRIUX neo) for clinical brain imaging. |
| Mesa Quantum | Boulder, CO, United States | 2023 | atomic/vapor-cell · Chip-scale clocks/PNT | Chip-scale atomic clocks and quantum PNT sensors for GPS-denied navigation. |
| Mode Labs | Oxford, United Kingdom | 2021 | Chemical sensing | Field chemical sensors (phosphorus, ammonia) using quantum-inspired optical-cavity sensing for water quality. |
| Nomad Atomics | Canberra, Australia | 2020 | cold-atom · cold-atom gravimeters/sensors | Builds field-deployable cold-atom quantum sensors: gravimeters, accelerometers and magnetometers for mining/navigation. |
| NVision Imaging Technologies | Ulm, Germany | 2015 | Quantum sensing/imaging | Hyperpolarization quantum technology for metabolic MRI; expanding into molecular quantum computing. |
| Oscilloquartz | Neuchâtel, Switzerland | 1949 | Timing/clocks | Atomic clocks (optical cesium) and precision timing/synchronization systems. |
| Phantom Photonics | Waterloo, Canada | 2023 | photonic · Quantum 3D remote sensing / LiDAR | Quantum 3D remote sensing / quantum LiDAR for extreme environments (space, marine, defence). |
| Phasor Quantum | Melbourne, Australia | NV-center/diamond · Quantum navigation / magnetometry | Develops synthetic-diamond NV quantum vector magnetometers for GPS-denied magnetic navigation. | |
| QDI Systems | Groningen, Netherlands | 2019 | Quantum-dot imaging | Quantum-dot photodetector technology for medical X-ray, mammography and SWIR imaging. |
| QinetiQ 📈 | Farnborough, United Kingdom | 2001 | Quantum sensing & PNT for defence | Defence technology firm with quantum sensing and position/navigation/timing programmes. |
| QLM Technology | Bristol, United Kingdom | 2017 | single-photon LiDAR · Quantum gas LiDAR (methane sensing) | Single-photon (SPAD) quantum gas-imaging LiDAR cameras to detect and quantify methane and other gas leaks. |
| Qnami (acquired by Quantum Design International, Inc., 2026) | Muttenz, Switzerland | 2016 | NV-center/diamond · Magnetometry | NV-center diamond scanning magnetometers (ProteusQ) and Quantilever probes for nanoscale magnetic imaging. |
| Qnity | Tulsa, United States | 2022 | Quantum-electrochemical sensing | Quantum-electrochemical chip for ultra-sensitive drug discovery and molecular screening. |
| QSENSATO | Bari, Italy | 2024 | Atomic-photonic quantum sensors / vapor cells | Develops integrated atomic-photonic chips and laser-written vapor-cell atomic sensors for ultra-precise field measurement. |
| QT Sense | Groningen, Netherlands | 2024 | NV-center/diamond · Nanoscale magnetometry | Nanodiamond/NV-based quantum sensors for single-cell and life-science diagnostics. |
| QUAD | Seoul, South Korea | Single-photon detection (SNSPD) | Develops superconducting-nanowire single-photon detectors for sensing, comms, QC and semiconductor inspection. | |
| Quantum Diamond Technologies (QDTI) | Somerville, MA, United States | 2015 | NV-center/diamond · NV-diamond magnetic imaging | NV-center diamond magnetic imaging platform for ultrasensitive biomarker detection and diagnostics. |
| Quantum Scopes | Stockholm, Sweden | 2021 | Single-photon instruments / imaging | Builds end-to-end single-photon systems: quantum spectrometers, microscopes, lidar and photon-pair sources. |
| Quantum Valley Ideas Laboratories (QVIL) | Waterloo, Canada | 2016 | Rydberg sensing R&D | Non-profit R&D lab commercializing Rydberg-atom RF sensors and related quantum technologies. |
| QuantumDiamonds | Munich, Germany | 2022 | NV-center/diamond · NV-diamond magnetic microscopy | NV-center diamond magnetic imaging for semiconductor failure analysis and chip inspection. |
| QuantX Labs | Adelaide, Australia | 2016 | precision timing / atomic clocks | Commercialises sapphire/optical atomic clocks and precision timing/quantum sensing for defence and critical infrastructure. |
| Quanvia | Leioa, Spain | 2021 | NV-center/diamond · Quantum biomedical diagnostics | Biomedical diagnostics using NV-center diamond magnetometry and ML for biomarker/biomolecule detection. |
| QuBeats | Hyderabad, India | 2022 | Atomic quantum sensors | Vapour-cell quantum sensors (magnetometry, gyroscopy, timing); building GPS-free quantum navigation for the Indian Navy. |
| QuPrayog | Pune, India | 2024 | Optical atomic clocks | Precision quantum metrology: portable optical atomic clocks, Ti:Sapphire lasers and optical frequency combs. |
| QuSpin | Louisville, CO, United States | 2012 | Optically pumped magnetometers | Compact optically pumped magnetometer (OPM) modules widely adopted for OPM-MEG brain imaging. |
| QZabre | Zurich, Switzerland | 2018 | NV-center/diamond · NV-diamond scanning magnetometry | Scanning NV magnetometers and diamond probes for nanoscale magnetic field/current imaging. |
| Rafael Advanced Defense Systems | Haifa, Israel | 1948 | Quantum sensors / navigation | Defense firm developing quantum sensors (accelerometers/gyroscopes) for GPS-denied navigation; in Israel's quantum-sensing consortium. |
| RobQuant | Sheffield, United Kingdom | 2023 | NV-diamond · NV-diamond magnetometry | Solid-state NV-diamond magnetometers integrated with silicon photonics for clinical-grade brain/industrial sensing. |
| Rydberg Technologies | Ann Arbor, MI, United States | 2015 | neutral-atom · Rydberg RF/electric-field sensing | Rydberg-atom quantum RF sensors and receivers covering DC to terahertz for sensing and comms. |
| SBQuantum | Sherbrooke, Canada | 2016 | NV-center/diamond · Diamond NV magnetometry | NV-diamond quantum magnetometers for navigation, geophysics and infrastructure; sensor flown in space. |
| SLEEX | South Korea | Quantum LiDAR / underwater sensing | Quantum LiDAR plus electric-field sensing for underwater perception, autonomous navigation and defense. | |
| STAR Cryoelectronics | Santa Fe, NM, United States | 1999 | SQUID magnetometers | SQUID sensors, readout electronics, cryogenic systems and superconducting thin-film foundry services. |
| SteerLight | Grenoble, France | 2022 | photonic · Photonic LiDAR/imaging | Silicon-photonics FMCW LiDAR and coherent imaging sensors for mobility/ADAS. |
| Supracon | Jena, Germany | 2001 | SQUID magnetometers | SQUID sensors and magnetometer systems for biomagnetism and geophysics; IPHT Jena spin-off. |
| Taifs Technology (泰福仕) | Wuhan, China | Chip-scale atomic clocks | Mass-produces chip-scale (CPT) atomic clocks for BeiDou/underwater navigation and drone-swarm timing. | |
| Tristan Technologies | San Diego, CA, United States | 1991 | SQUID magnetometers | SQUID-based magnetometer and biomagnetic (MEG/MCG) measurement systems. |
| Twinleaf | Plainsboro, NJ, United States | 2007 | Atomic/SERF magnetometers | Precision atomic (SERF) magnetometers, magnetic shielding and low-noise instrumentation. |
| Vector Atomic (acquired by IonQ, 2025) | Pleasanton, CA, United States | 2018 | neutral-atom · Atomic clocks/inertial sensing | Field-deployed atomic clocks, gravimeters and inertial sensors for GPS-independent PNT; now part of IonQ. |
| Vescent | Golden, CO, United States | 2002 | Optical atomic clocks/timing | Rugged optical frequency combs and the MIRIDIAN optical atomic clock for timing, sensing and navigation. |
| WaveRyde | Waterloo, Canada | Rydberg-atom · Rydberg-atom RF sensing | Rydberg atom-based RF/electric-field sensors for calibration-free, wideband signal detection. | |
| Xairos Systems | Lafayette, CO, United States | 2019 | Quantum timing/PNT | Quantum-entanglement-based time transfer and synchronization for GPS-independent precision timing. |
QKD, the quantum internet, entanglement distribution, repeaters, and quantum-secure telecom.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Aegis Quantum | Waterloo, Canada | neutral-atom · Quantum cryptography & communication | Develops and commercializes quantum cryptography/QKD systems plus design, testing and consulting services. | |
| Aliro Quantum | Boston, Massachusetts, United States | 2019 | Quantum network software / EaaS | Quantum network design, orchestration and Entanglement-as-a-Service software (AliroNet); Harvard spinout. |
| Anametric | Austin, Texas, United States | 2017 | Quantum photonic chips for QKD | Develops chip-scale quantum photonic devices for secure quantum communication and QKD; on DARPA QuANET. |
| Arq Quantum Technologies | Barcelona, Spain | 2025 | Quantum repeaters / network nodes | Develops rare-earth-ion quantum repeater hardware for quantum networks; part of Quantum Internet Alliance. |
| BraneCell | Littleton, MA, United States | 2015 | Quantum repeaters | Room-temperature all-photonic, keyless quantum repeaters and QPU for distributed networks. |
| CavilinQ | Cambridge, Massachusetts, United States | 2025 | Quantum interconnects | Builds modular cavity-enhanced photonic interconnects to network neutral-atom quantum processors. |
| Cohaerentia | Milan, Italy | 2014 | QKD devices | Develops quantum key distribution devices; one of three Italian QKD device producers. |
| Craft Prospect | Glasgow, United Kingdom | 2017 | Space-based QKD / quantum satellites | Space systems firm developing satellite payloads (ROKS) for quantum-secured (QKD) telecommunications. |
| Delft Networks | Delft, Netherlands | 2024 | Quantum networks | Deployment-ready entanglement-based quantum networks built on solid-state diamond qubits. |
| Guoke Quantum Communication Network (国科量子) | Shanghai, China | 2016 | National quantum backbone network operator | CAS-affiliated operator building/running China's provincial QKD backbone (145 nodes, 17 provinces, satellite links). |
| HEQA Security | Jerusalem, Israel | 2018 | QKD + PQC quantum-safe appliances | Production-grade quantum-safe appliances integrating QKD with a NIST-aligned post-quantum cryptography overlay. |
| ID Quantique (acquired by IonQ, 2025) | Geneva, Switzerland | 2001 | QKD/QRNG | Pioneer of commercial QKD systems (Cerberis/Clavis), QRNG and quantum-safe networks. |
| KEEQuant | Fürth, Germany | 2020 | QKD | Integrated-photonic continuous-variable QKD systems for critical-infrastructure security. |
| KETS Quantum Security | Bristol, United Kingdom | 2016 | Chip-scale QKD and QRNG | Chip-scale quantum key distribution (QKD) and quantum random number generation; Bristol spinout. |
| Ki3 Photonics Technologies | Montreal, Canada | 2015 | photonic · Quantum networking hardware | Modular photonic hardware for scalable quantum networking and entanglement distribution over fibre. |
| levelQuantum | Milan, Italy | 2022 | Satellite QKD / DI-QKD | Develops fiber, free-space and satellite quantum key distribution, including device-independent (DI-QKD). |
| Lightsynq Technologies (acquired by IonQ, 2025) | Boston, Massachusetts, United States | 2024 | Quantum interconnects / memory | Diamond color-center quantum interconnect and memory startup; acquired by IonQ in 2025. |
| LQUOM | Yokohama, Japan | 2020 | Quantum repeaters / quantum internet | Yokohama National University spinout building quantum repeaters and entanglement sources for the quantum internet. |
| LuxQuanta | Barcelona, Spain | 2021 | Continuous-variable QKD | Develops continuous-variable quantum key distribution (CV-QKD) systems for ultra-secure communications. |
| MagiQ Technologies | Somerville, Massachusetts, United States | 1999 | QKD systems | Released first commercial QKD product (Navajo, 2003); now also optical sensing and seismic monitoring. |
| memQ | Chicago, Illinois, United States | 2021 | Quantum memory / network interfaces | UChicago/Argonne spinout building silicon-photonic quantum memory and network interface modules. |
| Miraex (acquired by SEALSQ, 2026) | Lausanne, Switzerland | 2019 | photonic · Quantum interconnects | TFLT photonic microwave-to-optical quantum transducers/interconnects for distributed quantum computing and networking. |
| Next Generation Quantum (NGQ) (defunct) | Brooklyn, New York, United States | 2019 | Quantum interconnects | Develops quantum optical interconnects to network multiple quantum computers; City Tech-linked patent. |
| Nu Quantum | Cambridge, United Kingdom | 2018 | Quantum networking / data-centre interconnect | Quantum networking hardware and orchestration (Quantum Networking Unit) to connect QPUs; Cambridge spinout. |
| Photarix | Lancaster, United Kingdom | 2024 | photonic · Single-photon LED sources for QKD | Quantum Ring single-photon LED (QR-SPLED) telecom-wavelength sources for QKD; Lancaster spinout. |
| Pramatra Space | Bengaluru, India | 2023 | photonic · Satellite QKD | Builds entanglement-based QKD systems for satellite and terrestrial networks using photonic integrated circuits. |
| Q*Bird | Delft, Netherlands | 2022 | QKD networks | TNO/QuTech spinout building scalable multi-user MDI-QKD hardware and software for critical infrastructure. |
| Qasky (问天量子 / Anhui Wentian) | Wuhu, China | 2016 | QKD systems & quantum-secure networks | Chinese quantum cryptography firm making QKD terminals and quantum communication core devices. |
| QEYnet | Maple, Canada | 2016 | Satellite QKD | Building a global QKD network using low-cost microsatellites; CSA-funded QKD demonstration. |
| QRate | Moscow, Russia | 2015 | QKD systems | Fiber-optic quantum key distribution (QKD) systems, single-photon detectors and QRNG; Russian Quantum Center spinout. |
| QTI - Quantum Telecommunications Italy | Florence, Italy | 2020 | QKD systems and quantum networks | First Italian quantum-telecom company; builds QKD systems, key management and quantum SDN solutions; now develops quantum repeaters. |
| qtlabs (Quantum Technology Laboratories) | Vienna, Austria | 2017 | Quantum comms | Optical and quantum communication systems including satellite and ground-based QKD. |
| Quantized Technologies | Calgary, Canada | 2020 | Quantum-secure comms & quantum internet | UCalgary spinout building quantum-secure data exchange (QuSera) and quantum repeaters for the quantum internet. |
| QuantLR | Jerusalem, Israel | 2018 | QKD systems | Develops low-cost, easy-to-integrate QKD hardware for secure communications. |
| Quantum Bridge Technologies | Toronto, Canada | 2019 | Distributed symmetric keys (DSKE) | University of Toronto spinout commercializing Distributed Symmetric Key Establishment (DSKE) for quantum-safe comms. |
| Quantum Industries | Vienna, Austria | 2023 | QKD | Entanglement-based QKD systems securing telecom and critical infrastructure against quantum threats. |
| Quantum Network Design (QND) | Innsbruck, Austria | 2023 | Network design | Simulation software to design, analyze and optimize quantum networks before deployment. |
| Quantum Optics Jena | Jena, Germany | 2020 | QKD | Entanglement-based QKD systems and entangled-photon sources for quantum-secure networks. |
| QuantumCTek (国盾量子) 📈 | Hefei, China | 2009 | QKD / quantum-secure communication | China's dominant QKD vendor; supplies QKD devices, key management and network gear behind the national quantum-secure backbone. |
| QuantumCTek-affiliated China Telecom Quantum Group (中电信量子) 📈 | Hefei, China | 2023 | Quantum-secure telecom services | State-owned operator delivering hybrid QKD+PQC services, quantum-encrypted lines and 5G quantum encryption. |
| Qubitekk (acquired by IonQ, 2025) | Vista, California, United States | 2012 | Entanglement sources / QKD | Builds entangled-photon sources and quantum network hardware; operated EPB Chattanooga quantum network. |
| quCertify | Stockholm, Sweden | 2019 | Secure communication / quantum networks | Provides secure quantum communication and quantum network solutions (QKD, entanglement sources, QRNG). |
| Qunnect | Brooklyn, New York, United States | 2017 | Quantum repeaters / memory | Stony Brook spinout making room-temperature quantum memories and entanglement sources; powers GothamQ NYC network. |
| SpeQtral | Singapore, Singapore | 2017 | Satellite QKD | Satellite-based and terrestrial quantum-key-distribution systems; delivered entanglement-based QKD payload for SpeQtre mission. |
| Telsy | Turin, Italy | 1971 | QKD / quantum-safe telecom | TIM Group cybersecurity company developing QKD and quantum-safe communication solutions. |
| ThinkQuantum | Sarcedo, Italy | 2021 | QKD and QRNG for cybersecurity | University of Padua spinout making terrestrial and free-space/satellite QKD platforms and QRNG devices for cybersecurity. |
| VeriQloud | Paris, France | 2017 | Quantum internet / QKD | Quantum communication hardware and software (Qline QKD) for secure distributed networks. |
| Welinq | Paris, France | 2022 | Quantum memory / interconnects | Neutral-atom quantum memories and interconnects (QDrive) for distributed quantum computing and networking. |
| Xen Quantum | Cambridge, United Kingdom | 2025 | photonic · Chip-based QKD | Develops chip-scale quantum key distribution modules in silicon photonics for secure communications. |
| XT Quantech (循态量子) | Shanghai, China | 2020 | Continuous-variable QKD | Develops CV-QKD quantum communication systems integrated with telecom infrastructure; SJTU spinout (Zeng Guihua). |
| zerothird | Vienna, Austria | 2023 | QKD | Entanglement-based QKD and Key-as-a-Service for secure communication. |
Post-quantum cryptography, quantum-safe security, and quantum random number generators (QRNG).
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| 01 Communique (IronCAP) 📈 | Toronto, Canada | 1992 | PQC encryption | IronCAP code-based post-quantum cryptography for email/digital-asset encryption and signing. |
| 2pi Software | Sydney, Australia | 2012 | Quantum random number generation | Software firm delivering ANU-sourced quantum random numbers as a cloud QRNG API on the AWS Marketplace. |
| Aires Applied Quantum Technology | Singapore, Singapore | 2021 | PQC software & quantum cryptography | Singapore firm advancing post-quantum cryptography; filed Southeast Asia's first international PQC/quantum patents. |
| American Binary | Kirkland, United States | 2019 | Quantum-safe VPN | Post-quantum enterprise VPN and verified network protocol meeting NSA CNSA 2.0. |
| Arishti CyberTech | Pune, India | 2020 | Quantum-safe messaging | Develops quantum-safe enterprise messaging platform (MessageMe); IIT Bombay backed. |
| Arqit Quantum 📈 | London, United Kingdom | 2017 | Symmetric key agreement / quantum-safe encryption | Symmetric key agreement (SKA-Platform) and quantum-safe encryption for telecom, government and defence. |
| Axion Technologies | Tallahassee, United States | 2016 | Quantum random number generation | Develops high-speed quantum random number generators using a patented light-scrambling technique for encryption. |
| BTQ Technologies 📈 | Vancouver, Canada | 2021 | Post-quantum cryptography | Post-quantum cryptography and quantum-safe networking; designs PQC hardware accelerators and quantum-safe blockchain. |
| Cavero Quantum | Leeds, United Kingdom | 2024 | Quantum-safe cryptographic protocols | Quantum-safe authentication and key-exchange (Symmetrikey) for secure communications; Leeds spinout. |
| Chelpis Quantum Corp | Taipei, Taiwan | 2017 | Post-quantum cryptography | Post-quantum cryptography, quantum-safe migration and quantum-secure chip/security solutions. |
| ComScire | Gainesville, United States | 1994 | Quantum random number generation | PureQuantum CMOS-based quantum random number generators for cryptography, lotteries and gaming. |
| Crypta Labs | London, United Kingdom | 2014 | Quantum random number generation (QRNG) | Photonic QRNG entropy hardware for OEMs and data-centre appliances using quantum properties of light. |
| Crypto Quantique | London, United Kingdom | 2016 | Quantum-driven IoT security / QRNG | Quantum-driven IoT device security (QDID hardware root-of-trust, QuarkLink) using on-chip tunneling. |
| Crypto4A Technologies | Ottawa, Canada | 2017 | Quantum-safe HSMs | Quantum-safe, crypto-agile hardware security modules (QxHSM) and PQC migration solutions. |
| CryptoNext Security | Paris, France | 2019 | Post-quantum cryptography | Post-quantum cryptography software and toolkits to help organizations migrate to quantum-resistant security. |
| Cryptosense (acquired by SandboxAQ, 2022) | Paris, France | 2013 | Crypto discovery / analysis | Crypto-discovery and analysis software for detecting and remediating cryptographic vulnerabilities (PQC readiness). |
| DigiCert | Lehi, United States | 2003 | PKI / digital certificates | Certificate authority offering PQC-ready certificates and crypto-agile PKI for quantum readiness. |
| EigenQ | Austin, United States | 2025 | Full-stack post-quantum security | Post-quantum security platform spanning PQC, QRNG, quantum eSIM, quantum internet and quantum-safe networking. |
| Elmos Semiconductor 📈 | Dortmund, Germany | 1984 | QRNG chip | Developed world's smallest QRNG chip (2026 German Innovation Award) for embedded security. |
| Encryption Consulting | Prosper (Texas), United States | 2017 | CBOM / PQC migration | Cryptography bill-of-materials discovery and PQC migration tooling and advisory. |
| enQase | Austin, United States | 2025 | Quantum-safe security | Quantum-safe security platform combining post-quantum cryptography with QRNG, QKD and digital QKD. |
| Entrust | Shakopee, United States | 1994 | PKI / HSM quantum-safe | Identity, PKI and HSM provider delivering quantum-safe / PQC-ready cryptographic infrastructure. |
| evolutionQ | Waterloo, Canada | 2015 | Quantum-safe cryptography | Quantum-safe risk advisory and Basejump key-infrastructure suite (BasejumpSKI/QDN); co-founded by Michele Mosca. |
| ExeQuantum | Melbourne, Australia | 2023 | PQC-as-a-service | PQC-as-a-Service with APIs, cloud/on-prem delivery and TLS wrapping for quantum-safe migration. |
| EYL (Essential Tech) | Seoul, South Korea | 2015 | QRNG chips | Makes ultra-small radioisotope-based quantum random number generator (QRNG) chips and IoT quantum security. |
| Fortanix | Santa Clara, United States | 2016 | Confidential computing / KMS | Confidential computing and data security manager with PQC integration and crypto-agility. |
| Fortytwo Labs | Pune, India | 2016 | Quantum-safe cryptographic identity | Pi-Control digital trust platform delivering quantum-safe cryptographic identity, hardware authenticators and MFA. |
| fragmentiX Storage Solutions | Klosterneuburg, Austria | 2018 | Quantum-safe storage | Quantum-safe storage combining secret sharing, post-quantum crypto and QKD. |
| ICTK 📈 | Seoul, South Korea | 2001 | PUF + Q-PUF security | Physically Unclonable Function (PUF) chip and Q-PUF quantum security provider for IoT and smart devices. |
| InfiniQuant | Erlangen, Germany | 2018 | QRNG | Quantum-safe communication (CV-QKD) and high-speed QRNG technology. |
| InfoSec Global (acquired by Keyfactor, 2025) | Toronto, Canada | 2013 | Crypto-agility & PQC | Cryptographic discovery/agility platform (AgileSec) for crypto inventory and PQC migration. |
| ISARA Corporation | Waterloo, ON, Canada | 2015 | PQC / crypto-agility | Builds PQC solutions (ISARA Radiate, ML-KEM/ML-DSA) for crypto-agility; longtime PQC standardization contributor. |
| Keyfactor | Independence (Ohio), United States | 2001 | PKI / crypto-agility | PKI and crypto-agility platform to discover, manage and rotate cryptographic assets for PQC transition. |
| Keypair | Seoul, South Korea | 2011 | Post-quantum cryptography | PQC and secure-element firm delivering hardware-rooted quantum-safe security for critical infrastructure. |
| Kloch | Midlothian, United States | 2019 | Quantum-resistant FPGA encryption | Develops quantum-safe and QKD-based secure communication solutions. |
| Optalysys | Leeds, United Kingdom | 2013 | silicon photonic · Optical/FHE acceleration for PQC | Silicon photonic processors accelerating fully homomorphic encryption and secure-computation workloads. |
| Patero | College Park (Maryland), United States | 2021 | PQC migration | CryptoQoR post-quantum cryptography platform for protecting data in transit during PQC migration. |
| Post-Quantum (Post-Quantum.com) | London, United Kingdom | 2009 | Quantum-safe cryptography & identity | Post-quantum cryptography, secure messaging and quantum-safe identity/VPN; protects NATO comms. |
| pQCee | Singapore, Singapore | 2022 | Post-quantum cybersecurity | Post-quantum cybersecurity products including SafeQuard document signing, key management and Web3 protection. |
| PQSecure Technologies | Boca Raton, United States | 2017 | PQC hardware IP | Side-channel-protected post-quantum and classical cryptographic hardware/software IP cores. |
| PQShield | Oxford, United Kingdom | 2018 | Post-quantum cryptography | Post-quantum cryptography hardware IP and software embedded in chips, firmware and applications. |
| PQStation | Singapore, Singapore | 2024 | Quantum-safe migration / PQC | Crypto-resiliency tools (QVision) for cryptographic discovery and migration to post-quantum standards. |
| PsiQre | Copenhagen, Denmark | Post-quantum cybersecurity / crypto-agility | Enterprise software for post-quantum cryptographic risk management and migration to quantum-safe standards. | |
| Qabacus (unverified) | Boston, Massachusetts, United States | 2019 | Quantum communication / encryption | Reportedly offers quantum encryption/security software (quantum-secure blockchain for finance). |
| Qaisec | Sofia, Bulgaria | 2019 | Quantum encryption / quantum-resistant | Sofia startup offering quantum-resistant encryption and AI for banking and telecom, including a quantum-encrypted blockchain. |
| QANplatform | Tallinn, Estonia | 2019 | Quantum-resistant blockchain | Quantum-resistant hybrid Layer-1 blockchain implementing NIST PQC (Dilithium) signatures; EVM-compatible. |
| QApp | Moscow, Russia | 2019 | Post-quantum cryptography | Post-quantum cryptography software (PQLR SDK, Qtunnel VPN) and quantum-safe security; Russian Quantum Center spinout. |
| QClairvoyance Quantum Labs | Hyderabad, India | 2024 | QRNG / post-quantum cryptography | Develops a QRNG, a post-quantum VPN (QAegis QVPN) and PQC API security products on post-Moore architectures. |
| QNu Labs | Bengaluru, India | 2016 | QKD, QRNG, PQC | Indigenous quantum-safe security: QKD (Armos), QRNG (Tropos) and PQC for enterprise and government. |
| Qrypt | New York, United States | 2017 | QRNG / key generation | Generates encryption keys locally from quantum entropy, eliminating key transmission; entropy-as-a-service. |
| QryptoCyber | Washington (DC area), United States | 2023 | Crypto discovery / CBOM | PQC audit tooling that catalogs quantum-vulnerable cryptography and automates CBOM generation. |
| Qtonic Quantum | Miami, United States | 2024 | PQC risk & advisory | Vendor-neutral quantum cybersecurity firm offering cryptographic risk intelligence (QScout), quantum pen-testing and PQC migration. |
| QuantiCor Security | Darmstadt, Germany | 2017 | PQC | Post-quantum cryptography solutions for IoT, enterprise and IT-infrastructure security. |
| Quantix Edge Security | Murcia, Spain | 2024 | PQC / semiconductor personalization | Spain post-quantum and cybersecurity semiconductor design and personalization center. |
| Quantropi | Ottawa, Canada | 2018 | Quantum-secure communications | QiSpace platform with PQC (MASQ), symmetric encryption (QEEP) and QRNG-based entropy (SEQUR). |
| Quantum Base 📈 | Lancaster, United Kingdom | 2013 | Quantum-secure authentication / anti-counterfeiting | Atomic-level Q-ID anti-counterfeiting and authentication tags verifiable by smartphone; Lancaster spinout. |
| Quantum Blockchains | Lublin, Poland | 2021 | QKD emulation / QRNG / quantum-safe blockchain | Builds quantum-safe cryptography for blockchains: patented pQKD appliance, QRNG and quantum entropy APIs. |
| Quantum Dice | Oxford, United Kingdom | 2020 | Self-certifying QRNG (DISC protocol) | University of Oxford spinout building self-certifying high-speed photonic QRNG devices (DISC protocol). |
| Quantum eMotion 📈 | Montreal, Canada | 2013 | QRNG hardware & quantum-safe security | Semiconductor (quantum-tunneling) QRNG chip hardware and quantum-safe security software. |
| Quantum Knight | Palo Alto, United States | 2023 | Embeddable PQC | Lightweight embeddable PQC encryption SDK (CLEAR) for federal, defense and critical systems. |
| Quantum Xchange | Bethesda, Maryland, United States | 2018 | Quantum-safe key delivery / crypto-agility | Phio TX key-delivery and CipherInsights platform for quantum-safe (QKD + PQC) crypto management. |
| QuantumNova Cybersecurity | Oliveira do Hospital, Portugal | 2023 | Post-quantum cryptography | Portuguese deep-tech startup building NIST-aligned post-quantum cryptography products and quantum-safe VPN (QS-P Network). |
| Quantumz.io | Warsaw, Poland | 2022 | Quantum cybersecurity | Polish quantum-tech company focused on post-quantum cryptography and secure communications. |
| QuBalt | Hamburg, Germany | 2015 | Cryptanalysis-secure crypto | Quantum- and cryptanalysis-secure cryptographic solutions for automotive, aerospace and defense. |
| QUBO Technology | Vienna, Austria | 2023 | Quantum security | Optical quantum cryptography (quantum tokens) for securing digital payments. |
| QuintessenceLabs | Canberra, Australia | 2008 | QRNG and quantum-safe security | Quantum cybersecurity firm offering QRNG (qStream), key/policy management and quantum-safe encryption. |
| Quranium | Prilly, Switzerland | 2024 | PQC/blockchain | Post-quantum-secure layer-1 blockchain (SLH-DSA based) for finance and Web3. |
| QuSecure | San Mateo, California, United States | 2019 | Crypto-agility orchestration | Quantum-safe orchestration and crypto-agility platform (QuProtect) for rapid PQC deployment across networks. |
| Quside | Barcelona, Spain | 2017 | Quantum random number generation (QRNG) | Designs photonic-integrated quantum random number generators and entropy sources for cybersecurity and HPC. |
| Randaemon | Warsaw, Poland | 2021 | QRNG | Beta-decay quantum random number generator (QRNG) and BARN ciphers for cryptographic randomness. |
| ResQuant | Lodz, Poland | 2020 | PQC hardware | Hardware PQC: IP core licenses, FPGA accelerators and PQC System-on-Chip technology. |
| SEALSQ 📈 | Geneva, Switzerland | 2022 | PQC chips | Post-quantum secure semiconductors (QS7001), PKI and IoT hardware security; Nasdaq-listed WISeKey subsidiary. |
| SECQAI | London, United Kingdom | 2021 | Quantum-secure hardware/software & quantum AI | Ultra-secure hardware/software firm; built a hybrid quantum large language model (QLLM); NATO DIANA member. |
| Sectigo | Roseland, United States | 1998 | Digital certificates / PKI | Certificate authority and certificate-lifecycle management offering PQC-ready certificates. |
| SecureMachines | Bengaluru, India | 2019 | PQC hardware security modules | Builds quantum-safe security hardware; flagship Prastaara HSM supports post-quantum and classical cryptography. |
| Senetas 📈 | Melbourne, Australia | 1999 | post-quantum network encryption | High-assurance network encryption provider delivering quantum-resistant (NIST PQC) encryption for defence/government. |
| seQre | Wroclaw, Poland | 2012 | QRNG / QKD / quantum-safe | Quantum cryptography (QKD) and quantum random number generation platform run by CompSecur. |
| SeQure Quantum | Gdansk, Poland | 2021 | Quantum photonics for cybersecurity / QRNG | Self-certifying quantum random number generators (QRNG) and quantum-safe security for critical infrastructure. |
| Sixscape Communications | Singapore, Singapore | 2014 | PKI & post-quantum network security | PKI and certificate-automation cybersecurity firm adding post-quantum cryptography to secure communications. |
| Squareroot8 Technologies | Singapore, Singapore | 2020 | QKD & QRNG quantum security | Quantum-safe security firm offering QKD and QRNG products; part of Singapore's National Quantum-Safe Network. |
| TAQBit Labs | Bengaluru, India | 2018 | QKD, QRNG | Deep-tech firm providing QKD and QRNG security solutions for defense, telecom and enterprise infrastructure. |
| Utimaco | Aachen, Germany | 1983 | HSM / quantum-safe | Hardware security modules and key management with quantum-safe / PQC-ready firmware. |
| Veridify Security | Shelton (Connecticut), United States | 2004 | PQC for IoT/OT | Quantum-resistant security for low-resource IoT/OT and building-automation devices (DOME platform). |
| WISeKey 📈 | Geneva, Switzerland | 1999 | PKI / digital identity | Cybersecurity, PKI and digital identity firm deploying post-quantum root keys and quantum-safe IoT. |
| Xiphera | Espoo, Finland | 2017 | PQC IP cores | xQlave post-quantum cryptographic IP cores optimized for FPGA and ASIC integration. |
Cryogenics, control electronics, lasers/photonics, materials, fabrication, packaging, and test & measurement.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Active Technologies | Ferrara, Italy | 2003 | AWG / control electronics | Arbitrary waveform and pulse generators and high-speed instrumentation for quantum control. |
| Advent Diamond | Scottsdale, Arizona, United States | 2018 | Diamond materials & devices | Grows precision-doped diamond wafers and diamond electronics/detectors for power, sensing and quantum applications. |
| Aeluma 📈 | Goleta, California, United States | 2019 | photonic · Semiconductor / photonic components | Compound-semiconductor photonic and sensing devices on silicon for quantum, AI and comms. |
| AEPONYX (acquired by Pasqal, 2025) | Montreal, Canada | 2012 | Silicon-nitride photonic ICs / MEMS | Silicon-nitride/MEMS photonic integrated circuits; acquired by Pasqal to support neutral-atom laser systems. |
| Akhetonics | Berlin, Germany | 2021 | photonic · Photonic chips | All-optical general-purpose photonic processor and reconfigurable optical computing components. |
| Alpes Lasers | Saint-Blaise, Switzerland | 1998 | Lasers | Quantum cascade lasers (QCLs) for sensing and spectroscopy applications. |
| Aluvia Photonics | Enschede, Netherlands | 2022 | photonic · Photonic integrated circuits | Aluminum-oxide photonic integrated circuits for visible/UV-light and quantum photonics. |
| American Magnetics | Oak Ridge, Tennessee, United States | 1968 | Superconducting magnets | Superconducting magnet systems and power supplies for cryogenic and quantum research. |
| AmpliTech Group 📈 | Bohemia, New York, United States | 2002 | RF amplifiers / components | Low-noise amplifiers and RF/microwave components for quantum, satcom and 5G/6G. |
| Analog Devices 📈 | Wilmington, Massachusetts, United States | 1965 | Precision analog / control electronics | Precision analog, RF and data-converter components used in quantum control electronics. |
| Analog Quantum Circuits | Brisbane, Australia | 2022 | superconducting · superconducting components | Develops superconducting microwave components (circulators, amplifiers) to scale superconducting quantum computers. |
| AnaPico (acquired by Keysight Technologies, 2024) | Glattbrugg, Switzerland | 2005 | Control electronics | RF/microwave signal generators and phase-noise analyzers for quantum and test applications. |
| AnharmoniQ | Chicago, United States | 2024 | superconducting · Quantum hardware infrastructure | Builds critical hardware infrastructure for scaling large-scale superconducting quantum computers. |
| Anritsu 📈 | Atsugi, Japan | 1895 | Test & measurement | Test-and-measurement instrumentation supplier serving quantum hardware development. |
| Applied Nanotools | Edmonton, Canada | 2002 | Nanofabrication & photonics foundry | Nanofabrication and integrated-photonics (NanoSOI e-beam) foundry services for quantum and photonics. |
| Applied Quantum Materials (AQM) | Edmonton, Canada | 2016 | Quantum dots & nanomaterials | Manufactures silicon quantum dots and nanomaterials for sensing, thermal and electronics uses. |
| AQSolotl | Singapore, Singapore | 2024 | Quantum control hardware | Builds quantum control hardware, notably the CHRONOS-Q controller linking classical and quantum systems. |
| Arago | Paris, France | 2024 | photonic · Photonic computing chips | Develops a photonic AI processor (JEF) using silicon photonics and free-space optics to cut compute energy ~10x. |
| Arctic Instruments | Espoo, Finland | 2024 | Parametric amplifiers / qubit readout | Builds near-quantum-limited travelling-wave parametric amplifiers (TWPAs) for high-fidelity superconducting qubit readout. |
| Arkeon Technologies | Gothenburg, Sweden | 2025 | Josephson junction tuning | Post-fabrication tuning of Josephson junction resistance to improve superconducting qubit yield and frequency targeting. |
| ASP Isotopes 📈 | Washington, D.C., United States | 2021 | Materials / enriched isotopes | Enriched silicon-28 and other isotope materials for spin-qubit and quantum-computing applications. |
| attocube systems | Haar, Germany | 2001 | Cryogenic positioners / instrumentation | Cryogenic nanopositioners, sensors and low-temperature measurement instrumentation. |
| AUREA Technology | Besancon, France | 2010 | photonic · Single-photon detection / photon sources | Builds single-photon detectors and time-correlation instruments used in QKD and quantum communication. |
| Ayar Labs | San Jose, California, United States | 2015 | photonic · Silicon photonics / optical I/O | Optical I/O chiplets enabling high-bandwidth interconnects relevant to quantum and HPC. |
| Barber-Nichols | Arvada, Colorado, United States | 1966 | Cryogenics / turbomachinery | Cryogenic turbomachinery and pumps used in helium refrigeration and quantum cooling. |
| Berkeley Nucleonics | San Rafael, California, United States | 1963 | Test & measurement / AWG | Arbitrary waveform generators, signal generators and timing instruments used in quantum control. |
| Bifrost Electronics | Boulder, United States | 2025 | Cryogenic readout / parametric amplifiers | Builds Josephson-junction-free traveling-wave parametric amplifiers (TWPAs) for scalable superconducting qubit readout. |
| Bluefors | Helsinki, Finland | 2008 | Cryogenics / dilution refrigerators | World-leading maker of cryogen-free dilution refrigerators and cryogenic measurement systems for quantum computers. |
| Brightlight Photonics | Cambridge, Massachusetts, United States | 2024 | Integrated lasers | Develops chip-scale titanium:sapphire (Ti:SaOI) lasers and amplifiers for quantum, metrology and biomedicine. |
| Brolis Semiconductors | Vilnius, Lithuania | 2011 | Mid-IR laser diodes / MBE epitaxy | Develops mid-infrared GaSb laser diodes and MBE epitaxial wafers for sensing, defence and quantum tech. |
| CCRAFT | Neuchâtel, Switzerland | 2025 | photonic · Photonic chips | Production-ready thin-film lithium-niobate (TFLN) photonic chip foundry for quantum and high-speed photonics. |
| CMC Microsystems | Kingston, Ontario, Canada | 1984 | Fabrication access / foundry brokerage | Non-profit providing Canadian researchers access to chip fabrication, packaging and test services. |
| Coherent 📈 | Saxonburg, Pennsylvania, United States | 1971 | Lasers / photonics | Lasers and photonic devices, vertically integrated optics and components for quantum systems. |
| ConScience | Gothenburg, Sweden | 2012 | Quantum chip / nanofabrication | Gothenburg micro/nanofabrication foundry supplying quantum chips and devices (e.g. QiB0) for quantum technology. |
| Covesion | Southampton, United Kingdom | 2009 | Nonlinear optics (PPLN crystals) | MgO:PPLN crystals, waveguides and modules for quantum photonics, frequency conversion and lasers. |
| Creotech Instruments 📈 | Piaseczno, Poland | 2012 | Control electronics | Modular electronics and control systems for quantum and space applications. |
| CryoCoax | Reading, United Kingdom | 2015 | Cryogenic coaxial cables/connectors | Cryogenic coaxial cables, connectors and RF assemblies for quantum and ultra-low-temperature systems. |
| CryoConcept (acquired by Air Liquide, 2020) | Les Ulis, France | 2000 | Cryogenics / dilution refrigerators | Ultra-low-temperature dilution refrigerators (HEXA-DRY/HEXA-WET) reaching below 10 mK. |
| Cryofab | Kenilworth, New Jersey, United States | 1971 | Cryogenics / dewars | Cryogenic dewars, vessels, valves (Cryocomp) and transfer equipment. |
| Cryomagnetics | Oak Ridge, Tennessee, United States | 1983 | Cryogenics / superconducting magnets | Superconducting magnet systems, cryostats and cryogenic instrumentation. |
| Cryomech (acquired by Bluefors, 2023) | Syracuse, New York, United States | 1963 | Cryogenics / cryocoolers | Pulse-tube and Gifford-McMahon cryocoolers and cryogenic refrigeration systems. |
| Delft Circuits | Delft, Netherlands | 2016 | Cryogenic I/O cabling | Cri/oFlex flexible cryogenic RF cables with integrated filtering for scalable quantum I/O. |
| Diamond Quanta | Mountain View, California, United States | 2024 | NV-center/diamond · Materials / diamond | Doped lab-grown diamond materials and semiconductor technology for power electronics and quantum. |
| Diatope | Ulm, Germany | 2021 | NV-center/diamond · Quantum materials | CVD diamond materials and NV-center substrates for quantum sensing and computing. |
| Dimira Technologies | Mumbai, India | 2024 | Cryogenic RF cables | Indigenous cryogenic radio-frequency cables and interconnects for quantum hardware; incubated at IIT Bombay. |
| DiTom Microwave | Fresno, California, United States | 1987 | RF/microwave components | RF isolators and circulators used in qubit readout and control chains. |
| Dream Photonics | Vancouver, Canada | 2020 | Silicon photonics design & devices | UBC-spinout silicon/integrated photonics design house and devices for quantum and communications. |
| Ekspla | Vilnius, Lithuania | 1992 | Lasers / laser electronics | Manufactures scientific and industrial lasers and laser electronics used in quantum and photonics research. |
| Emergence Quantum | Sydney, Australia | 2025 | superconducting · cryogenic control electronics | Develops cryogenic/scalable control and readout electronics to operate qubits across hardware platforms. |
| Ephos | Milan, Italy | 2022 | photonic · Glass-based photonic chips | Designs and manufactures glass-based quantum photonic chips; runs the first dedicated glass-photonics facility in Milan. |
| Epoch Wires | Cambridge, United Kingdom | 2013 | Superconducting (MgB2) wires | First company to commercialize MgB2 superconducting wires; serves MRI, energy and aerospace. |
| ERZIA | Santander, Spain | 2002 | RF/microwave components | RF/microwave amplifier modules and subsystems used in quantum, space and defense applications. |
| Eulambia Advanced Technologies | Athens, Greece | 2013 | Photonics & electronics R&D / engineering | Photonics and microwave-electronics R&D and engineering, including quantum-communication/QKD-related custom systems. |
| Excelitas Technologies | Pittsburgh, Pennsylvania, United States | 2010 | Photonics / single-photon devices | Single-photon counting modules, avalanche photodiodes and optoelectronic photonics components. |
| Faraday Factory Japan | Hachioji, Japan | 2011 | High-temperature superconductor tape | Manufactures 2G high-temperature superconducting (REBCO) tape for fusion, magnets and cryogenic systems. |
| Femtum | Quebec City, Canada | 2017 | Mid-IR fiber lasers | Mid-infrared pulsed fiber laser systems for photonics/semiconductor manufacturing and sensing. |
| Filtronic 📈 | Sedgefield, United Kingdom | 1977 | RF/microwave filters & components | Custom cryogenic RF and microwave filters and components for superconducting quantum systems. |
| FormFactor (HPD) 📈 | Livermore, California, United States | 1993 | Test & measurement / cryogenics | Cryogenic probe stations, dilution refrigerators (HPD) and high-speed cryogenic chip test systems. |
| FrostByte | Delft, Netherlands | 2025 | Cryogenic CMOS electronics | Cryogenic CMOS control electronics integrated close to qubits for scalable quantum systems. |
| Fujikura 📈 | Tokyo, Japan | 1885 | Superconducting wire / cabling | Manufactures superconducting wires, cables and optical-fiber components used in quantum hardware. |
| GlobalFoundries 📈 | Malta, New York, United States | 2009 | Chip fabrication / foundry | 300mm semiconductor foundry fabricating photonic and silicon quantum chips at scale. |
| Great Lakes Crystal Technologies | Lansing, Michigan, United States | 2019 | CVD diamond materials | Produces ultra-high-purity single-crystal CVD diamond substrates/wafers for quantum sensing, power electronics and detectors. |
| Hamamatsu Photonics 📈 | Hamamatsu, Japan | 1953 | Photonic devices / single-photon detectors | Photonics manufacturer supplying single-photon detectors, SPADs and light sources for quantum systems. |
| Hawthorn Photonics | Bozeman, Montana, United States | Nonlinear optics / frequency conversion | US photonics group in nonlinear optics and quantum photonics; parent of AdvR, Covesion and Radiantis. | |
| Henan Shijia Photons Technology (仕佳光子) 📈 | Hebi, China | 2010 | Photonic chips & QRNG components | Optical/photonic chip and component maker (PLC/AWG/DFB) involved in QRNG chip and optical-component supply. |
| High Precision Devices (acquired by FormFactor, 2020) | Boulder, Colorado, United States | 1994 | Cryogenics | Adiabatic demagnetization refrigerators and cryogenic instrumentation for quantum and detector research. |
| HiQuTe Diamond | Boulogne-Billancourt, France | 2022 | NV-center/diamond · NV-center diamond materials | Nitrogen-doped, isotopically enriched diamond plates with NV centers for quantum sensing and computing. |
| Holzworth Instrumentation | Boulder, Colorado, United States | 2004 | RF test & measurement | Low phase-noise RF synthesizers and phase-noise analyzers for quantum control. |
| Hyper Tech Research | Columbus, Ohio, United States | 2001 | Superconducting materials | Superconducting MgB2 and Nb3Sn wires and materials for magnets and cryogenic systems. |
| Icarus Quantum | Boulder, Colorado, United States | 2022 | photonic · Single-photon sources / materials | Quantum-dot single- and entangled-photon source technology for quantum networking and photonic links. |
| ICE Oxford | Witney, United Kingdom | 2004 | Cryogenics | Custom cryogenic systems, cryostats and ultra-low-temperature solutions for quantum research. |
| imec (quantum) | Leuven, Belgium | 1984 | spin/silicon · Quantum chip fabrication / nanoelectronics | Nanoelectronics R&D center fabricating 300mm silicon spin-qubit quantum chips; coordinates the EU SPINS pilot line. |
| Innofocus Photonics Technology | Melbourne, Australia | 2018 | photonic nanomanufacturing | Builds intelligent 3D laser nanomanufacturing systems for photonic and quantum device fabrication. |
| Innolume | Dortmund, Germany | 2003 | Lasers / gain chips | Quantum-dot gain chips, DFB lasers and SOAs across ~1000-1320nm for photonics and quantum. |
| Integrated Optics | Vilnius, Lithuania | 2012 | Compact lasers for quantum | Designs compact, space-qualified laser sources used in quantum experiments and orbital quantum payloads. |
| Interlune | Seattle, Washington, United States | 2020 | Helium-3 supply | Harvests helium-3 (lunar and terrestrial) to supply cryogenic refrigerants for quantum computing. |
| Intermodulation Products | Landa, Sweden | 2010 | Control & readout electronics | Multifrequency lock-in and Presto/Vivace microwave control-readout instruments for quantum devices. |
| Isentroniq | Paris, France | 2025 | superconducting · Cryogenic qubit wiring | Fabless cryogenic wiring/interconnect technology to scale superconducting qubit counts in dilution fridges. |
| Janis Research (acquired by Lake Shore Cryotronics, 2020) | Woburn, Massachusetts, United States | 1961 | Cryogenics | Cryogenic, magnetic and material-characterization measurement instruments used in quantum computing. |
| K1 Semiconductor | Chicago, United States | 2024 | Wafer spalling / materials | Wafer-splitting (spalling) platform enabling up to 20x reuse of SiC, GaN, LiNbO3 and diamond wafers for quantum and other devices. |
| Keysight Technologies 📈 | Santa Rosa, California, United States | 2014 | Test & measurement / control electronics | Quantum control, characterization and test-and-measurement instruments and Labber software. |
| kiutra | Munich, Germany | 2018 | Cryogenics | Cryogen-free adiabatic-demagnetization (magnetic) cooling systems for quantum technologies. |
| Leiden Cryogenics | Leiden, Netherlands | 1992 | Dilution refrigerators | Dutch maker of dilution refrigerators, cryostats and ultra-low-temperature systems for quantum and physics research. |
| Leybold | Cologne, Germany | 1850 | Vacuum technology | Vacuum pumps and technology used in quantum device fabrication and cryogenics. |
| LIGENTEC | Lausanne, Switzerland | 2016 | photonic · Photonic chips | Low-loss silicon nitride photonic integrated circuit foundry for quantum and classical photonics. |
| Lightium | Schlieren, Switzerland | 2022 | Thin-film lithium niobate photonic foundry | Industrial thin-film lithium niobate (TFLN) photonic integrated circuit foundry and design services. |
| LightMachinery | Ottawa, Canada | 2002 | Precision optics & lasers | Precision optical components, etalons and lasers used in quantum sensing and photonics. |
| LioniX International | Enschede, Netherlands | 2001 | photonic · Photonic integrated circuits | TriPleX silicon-nitride photonic integrated circuits and modules used in quantum photonics. |
| Liquid Instruments | Canberra, Australia | 2014 | test & measurement instruments | ANU/NASA-JPL spinout making FPGA-based Moku test-and-measurement instruments used in quantum labs and rigs. |
| Low Noise Factory | Gothenburg, Sweden | 2005 | Cryogenic low-noise amplifiers | Designs and produces high-performance cryogenic low-noise microwave amplifiers for quantum computing readout chains. |
| Lumai | Oxford, United Kingdom | 2022 | photonic · Optical AI compute | 3D free-space optical computing hardware for AI inference acceleration. |
| M-Labs (Sinara/ARTIQ) | Hong Kong, Hong Kong | 2013 | Control electronics / hardware | Open-source ARTIQ control system and Sinara hardware for trapped-ion and quantum experiments. |
| Marki Microwave (acquired by Industrial Growth Partners, 2025) | Morgan Hill, California, United States | 1991 | RF/microwave components | Mixers, filters and RF/microwave components used in quantum control electronics. |
| Maury Microwave | Ontario, California, United States | 1957 | RF test & measurement | RF/microwave test, calibration and measurement systems for quantum hardware characterization. |
| Maybell Quantum | Denver, Colorado, United States | 2021 | Cryogenics / wiring | High-density dilution refrigerators (Big Fridge, ColdCloud) and cryogenic wiring for scaled quantum systems. |
| Menlo Systems | Martinsried, Germany | 2001 | Frequency combs | Optical frequency combs and ultra-stable laser references for clocks and quantum metrology. |
| Mini-Circuits | Brooklyn, New York, United States | 1969 | RF/microwave components | RF and microwave components (amplifiers, mixers, filters) widely used in quantum setups. |
| MOGLabs (acquired by Santec, 2025) | Melbourne, Australia | 2006 | Lasers / control electronics | Diode laser systems and laser/RF control electronics for atomic physics and quantum labs. |
| Monarch Quantum | San Diego, California, United States | 2025 | Photonic control systems / lasers | Makes integrated photonic 'light engines' (lasers, modulators, detectors, control) for neutral-atom, ion and other quantum hardware. |
| Montana Instruments | Bozeman, Montana, United States | 2010 | Cryogenics | Closed-cycle cryostats and integrated cryogenic platforms for quantum and optics research. |
| Munich Quantum Instruments | Munich, Germany | 2022 | photonic · Detectors | Superconducting-nanowire single-photon detectors (SNSPDs) for photonic quantum systems. |
| Nanoco Technologies 📈 | Runcorn, United Kingdom | 2001 | Quantum dots / nanomaterials | Cadmium-free quantum dots and nanomaterials for displays, sensing and imaging. |
| Nexus Photonics | Santa Barbara, California, United States | 2018 | Integrated photonics / lasers | Builds heterogeneous photonic integrated circuits with low-noise tunable lasers (UV to IR) for atomic clocks and quantum. |
| NKT Photonics | Birkeroed, Denmark | 2009 | Lasers / fibers | Fiber lasers, supercontinuum sources and specialty fibers used in quantum applications. |
| Norcada | Edmonton, Canada | 2001 | MEMS & membrane components | MEMS, silicon-nitride membranes and microfabricated components used in sensing and quantum experiments. |
| NuCrypt (acquired by Quantum Computing Inc., 2026) | Evanston, IL, United States | 2004 | Photon instrumentation | Quantum optical instrumentation: entangled-photon sources, detectors and state-tomography systems. |
| Octave Photonics | Louisville, Colorado, United States | 2019 | Nonlinear nanophotonics | Makes packaged nonlinear nanophotonic chips (supercontinuum, frequency-comb stabilization) for atomic clocks and quantum systems. |
| Onnes Technologies | Leiden, Netherlands | 2018 | Cryogenic nanopositioning | Cryogenic nanopositioners (Cryo-Walking) for low-temperature quantum and materials research. |
| Optiwave Systems | Ottawa, Canada | 1994 | Photonics design software | Photonics and optical-system design/simulation software used in quantum communication and sensing. |
| Orange Quantum Systems | Delft, Netherlands | 2020 | Quantum chip test & benchmarking | Automated test, characterization and benchmarking systems for quantum chips. |
| Oriole Networks | London, United Kingdom | 2023 | photonic · Photonic networking for AI/data centres | Photonic optical-circuit-switched networking to interconnect AI chips; UCL spinout. |
| OTI Lumionics | Mississauga, Canada | 2011 | Materials & quantum simulation | Materials company using quantum/quantum-inspired simulation to design OLED and electronic materials. |
| Oxford Instruments 📈 | Abingdon, United Kingdom | 1959 | Cryogenics / dilution refrigerators | Cryogenic systems including Proteox dilution refrigerators enabling quantum hardware. |
| OZ Optics | Ottawa, Ontario, Canada | 1985 | Fiber-optic components | Supplies fiber-optic components and entangled-photon-pair sources (PPLN/PPSF) for quantum applications. |
| Phoenix Company of Chicago | Chicago, Illinois, United States | 1969 | RF interconnects / packaging | PkZ constant-impedance RF/microwave blindmate connectors and cryogenic cable assemblies for quantum systems. |
| PHOTEC (Photon Technology) | Jiaxing, China | 2018 | Superconducting single-photon detectors | Industrializes superconducting nanowire single-photon detectors (SNSPD) and cryogenic systems. |
| Photon Force | Edinburgh, United Kingdom | 2015 | Single-photon avalanche diode (SPAD) arrays | CMOS single-photon avalanche diode (SPAD) detector arrays and time-resolved cameras for photon counting. |
| Photon Spot | Monrovia, California, United States | 2009 | Single-photon detectors / cryogenics | Superconducting nanowire single-photon detectors (SNSPDs) and sub-Kelvin cryogenic systems. |
| PHPK Technologies | Lewis Center, Ohio, United States | 1991 | Cryogenics / vacuum | Cryogenic and high-vacuum equipment, valves, vacuum-jacketed piping and cryopump systems. |
| PicoQuant | Berlin, Germany | 1996 | photonic · Detectors/lasers | Pulsed laser sources, single-photon counting and time-resolved photonics instrumentation. |
| Pilot Photonics | Dublin, Ireland | 2011 | photonic · Optical comb / photonic integration | Photonic integrated optical frequency comb laser sources; Dublin City University spinout. |
| PINC Technologies | Pasadena, California, United States | 2023 | photonic · Photonic components | Scalable integrated nonlinear photonic devices for quantum light generation and processing. |
| Pixel Photonics | Münster, Germany | 2021 | photonic · Single-photon detectors | Waveguide-integrated superconducting nanowire single-photon detectors and photonic components. |
| Plasmionique | Varennes, Canada | 1999 | Thin-film & materials equipment | Custom thin-film deposition and plasma/vacuum systems relevant to quantum-materials fabrication. |
| Plessey Semiconductors (acquired by Haylo Labs, 2025) | Plymouth, United Kingdom | 2010 | Optoelectronic components | GaN-on-silicon microLED and optoelectronic components with quantum-relevant photonics. |
| Prenishq | New Delhi, India | 2022 | Precision diode-laser systems | High-precision diode laser systems and quantum sensors; demonstrated India's first indigenous precision diode laser. |
| Pristine Diamonds | Ahmedabad, India | 2021 | NV-center/diamond · CVD diamond materials | Grows electronic/NV-grade single-crystal CVD diamond and MPCVD reactors for quantum sensing and computing. |
| Q.ANT | Stuttgart, Germany | 2018 | photonic · Photonic chips | Thin-film lithium niobate photonic processors and chips for energy-efficient AI/HPC computing. |
| Qblox | Delft, Netherlands | 2019 | Qubit control electronics | Modular qubit control and readout electronics stacks for scalable quantum systems. |
| QDevil (acquired by Quantum Machines, 2022) | Copenhagen, Denmark | 2016 | Cryogenic electronics / components | Cryogenic auxiliary electronics, filters and components operating from mK to room temperature. |
| Qolab | Santa Barbara, CA, United States | 2022 | superconducting · Superconducting fab | Manufactures high-coherence superconducting qubit chips via 300mm semiconductor fabrication. |
| QphoX | Delft, Netherlands | 2020 | Microwave-optical transduction | Builds optical-to-microwave quantum transducers (Quantum Modem) to network superconducting quantum processors. |
| Quan2D Technologies | Bengaluru, India | 2021 | Single-photon detectors (SNSPDs) & nanomaterials | Develops SNSPDs plus graphene/2D nanomaterials and quantum sensing solutions; based at IISc Bengaluru. |
| Quanastra | New Delhi, India | 2024 | Cryogenics & superconducting detectors | Develops SNSPDs, custom cryogenics and cryoelectronics for quantum computing, communication and imaging. |
| Quantcore | Glasgow, United Kingdom | 2025 | superconducting · Niobium superconducting components | Niobium-based superconducting processors, resonators and components for quantum hardware. |
| QuantLase Lab | Abu Dhabi, United Arab Emirates | 2020 | photonic · Quantum photonics / lasers | Quantum-photonics R&D lab building the PIPU photonic AI chip, high-power lasers and quantum-secure comms. |
| Quantum Design | San Diego, California, United States | 1982 | Cryogenics / measurement | Cryogenic measurement systems, dilution refrigerators and superconducting magnet platforms. |
| Quantum Enabling Technologies (QET Sweden) | Gothenburg, Sweden | Superconducting microwave components / TWPAs | Develops superconducting microwave components including travelling-wave parametric amplifiers (QET Vidar) for quantum. | |
| Quantum Machines | Tel Aviv, Israel | 2018 | Quantum control hardware & software (OPX/QUA) | Builds quantum control electronics (OPX) and the QUA language used across many quantum hardware platforms worldwide. |
| Quantum Microwave | Hingham, Massachusetts, United States | 2016 | RF/microwave components | Cryogenic RF/microwave components, low-noise amplifiers, isolators and assemblies for quantum systems. |
| Quantum Opus | Plymouth, Michigan, United States | 2013 | Single-photon detectors / cryogenics | Superconducting nanowire single-photon detectors and compact cryocooler systems. |
| Qubic Technologies | Sherbrooke, Quebec, Canada | 2019 | Quantum microwave / cryogenic amplifiers | Develops cryogenic superconducting/parametric amplifiers and quantum microwave devices from quantum materials. |
| QuEL | Osaka, Japan | 2021 | Qubit control electronics | Osaka University-affiliated startup supplying qubit controllers and control electronics/middleware for quantum computers. |
| QuinStar Technology | Torrance, California, United States | 1993 | RF/microwave components | Cryogenic isolators, circulators and amplifiers; mmWave and microwave components for quantum systems. |
| QustomDot | Ghent, Belgium | 2020 | Materials / quantum dots | Cadmium-free (InP) quantum dot materials for microLED displays and photonic applications. |
| qutools | Munich, Germany | 2005 | photonic · Quantum optics instruments | Quantum optics instrumentation: entangled-photon sources, QRNG, timing, and education kits. |
| QVersion | Aarhus, Denmark | Mid-infrared chip lasers | Develops mid-infrared chip-based laser platforms for molecular sensing and secure free-space communication. | |
| RANOVUS | Ottawa, Canada | 2012 | Silicon photonics interconnects | Silicon-photonics optical interconnects (Odin) with quantum-dot multi-wavelength lasers for data centres. |
| Rhonexum | Lausanne, Switzerland | 2025 | Cryogenic control electronics | Develops cryo-CMOS electronics operating inside cryostats to address quantum cabling/scaling bottlenecks. |
| Rohde & Schwarz | Munich, Germany | 1933 | Test & measurement / RF | RF/microwave test instruments and quantum control electronics (via Zurich Instruments). |
| Rosenberger Cryogenic Quantum | Tittmoning, Germany | 1958 | Cryogenic components | RF/microwave connectors and cryogenic cable assemblies used in quantum control wiring. |
| S-Fifteen Instruments | Singapore, Singapore | 2017 | Quantum instruments, QKD & QRNG | Builds quantum-control instruments plus QKD systems, QRNGs, photon-pair sources and single-photon detectors. |
| Sacher Lasertechnik | Marburg, Germany | 1992 | Lasers | Tunable external-cavity diode lasers for spectroscopy and atomic/quantum experiments. |
| SAES Group (Rial Vacuum) 📈 | Lainate, Italy | 1940 | Vacuum / getters | Getters and UHV vacuum systems for ion-trap and atomic quantum hardware; Rial Vacuum acquired 2021. |
| Scale Quantum (标度量子) | China | 2024 | STM/AFM atomic-precision metrology equipment | Manufactures scanning tunneling microscopes, atomic force microscopes and probes for atomic-scale fabrication. |
| SCALINQ | Gothenburg, Sweden | 2022 | QPU packaging / signal routing | Provides packaging, filtering and wiring (Linqer) for large-scale superconducting and spin-qubit quantum processors. |
| SCONTEL | Moscow, Russia | 2004 | Superconducting single-photon detectors | Manufactures superconducting nanowire single-photon detector systems with integrated cryocoolers and electronics. |
| Single Quantum | Delft, Netherlands | 2012 | Single-photon detectors | Superconducting nanowire single-photon detectors (SNSPD) for quantum and photonics applications. |
| Singular Photonics | Edinburgh, United Kingdom | 2024 | Photonic detectors | SPAD-based photon-counting image sensors for quantum, spectroscopy and imaging applications. |
| SkyWater Technology 📈 | Bloomington, Minnesota, United States | 2017 | Chip fabrication / foundry | US semiconductor foundry providing dedicated fabrication for quantum and specialty chips. |
| Sparrow Quantum | Copenhagen, Denmark | 2016 | photonic · Single-photon sources | Maker of on-demand deterministic single-photon source chips (Sparrow Core) for photonic quantum computing. |
| Spectrum Instrumentation | Grosshansdorf, Germany | 1989 | Control electronics | Arbitrary waveform generators and digitizers for quantum control and readout. |
| Stable Laser Systems | Boulder, Colorado, United States | 2009 | Lasers | Ultra-stable lasers and Fabry-Perot reference cavities for optical clocks and quantum experiments. |
| Stirling Cryogenics | Eindhoven, Netherlands | 1954 | Cryogenics | Stirling-cycle cryocoolers and stand-alone cryogenic cooling systems. |
| STMicroelectronics 📈 | Geneva, Switzerland | 1987 | Chip fabrication / foundry | Semiconductor manufacturer with process capabilities relevant to qubit and quantum chip fabrication. |
| Sumitomo Heavy Industries (SHI Cryogenics) 📈 | Tokyo, Japan | 1969 | Cryogenics / cryocoolers | Gifford-McMahon and pulse-tube cryocoolers and cryogenic refrigeration for quantum and research systems. |
| sureCore | Sheffield, United Kingdom | 2011 | Cryo-CMOS semiconductor IP | Licenses low-power and cryogenic (CryoMem) CMOS memory/IP for cryo control electronics in quantum computing. |
| Sweden Quantum | Gothenburg, Sweden | 2022 | IR-blocking filters / microwave components | Produces ultra-low-loss infrared-blocking filters (HERD technology) for superconducting quantum computing. |
| SynthBits | Chicago, United States | 2024 | molecular spin qubit · Molecular qubits / materials | Develops chemically synthesized transition-metal molecular qubits for computing, communication and nanoscale sensing. |
| Tabor Electronics | Nesher, Israel | 1971 | Control electronics / AWG | Arbitrary waveform generators and signal sources used in quantum control stacks. |
| Tabor Quantum Solutions | Haifa, Israel | RF/microwave qubit control systems | Direct RF/microwave large-scale control and measurement systems (Proteus AWG/digitizers) for quantum processors. | |
| Tektronix | Beaverton, Oregon, United States | 1946 | Test & measurement | Oscilloscopes, AWGs and measurement instruments used in quantum control and characterization. |
| Thorlabs | Newton, New Jersey, United States | 1989 | Optics / photonics components | Optical components, opto-mechanics, fiber optics and photonics building blocks for quantum labs. |
| TOPTICA Photonics | Gräfelfing, Germany | 1998 | Lasers | Tunable diode and frequency-stabilized laser systems for ion/atom cooling, clocks and sensing. |
| Tropic Square | Prague, Czechia | 2020 | Secure element chips | Open-architecture RISC-V tamper-proof secure-element chips (TROPIC01) with on-chip TRNG/crypto. |
| Tundra Systems Global | Cardiff, United Kingdom | 2014 | photonic · Silicon photonics | Silicon-photonics all-optical computing chip developer. |
| ULVAC Cryogenics 📈 | Chigasaki, Japan | 1981 | Cryogenics / cryocoolers | Supplies cryocoolers and cryogenic equipment used in superconducting quantum computers. |
| Universal Quantum Devices (UQDevices) | Waterloo, Canada | 2012 | Time-tagging & coincidence counting | Time-tagger and coincidence-counting electronics for quantum optics, QKD and photon-correlation experiments. |
| VACOM | Grossloebichau, Germany | 1992 | Vacuum components | Ultra-high-vacuum components, feedthroughs and chambers for quantum experiments. |
| Vexlum | Tampere, Finland | 2017 | Lasers (VECSEL) for quantum | Manufactures high-power VECSEL semiconductor laser systems for quantum computing, sensing and space applications. |
| Vivid Photonics | Cork, Ireland | 2024 | photonic · Photonic light sources (SLD) | Surface-emitting super-luminescent diode (SLD) photonic light-source technology; Tyndall/IPIC spinout. |
| Wave Photonics | Cambridge, United Kingdom | 2021 | photonic · Integrated photonics IP / PIC design | Integrated-photonics IP, components and quantum PIC packaging services for visible-light and quantum applications. |
| YQuantum | Villigen, Switzerland | 2024 | superconducting · Cryogenic components | Miniaturized cryogenic hardware components (BiasTs, coldstages) for next-generation quantum computers. |
| Zero Point Cryogenics | Edmonton, Canada | 2017 | Dilution refrigerators / cryogenics | Dilution refrigerators and cryogenic systems that cool quantum computers to millikelvin temperatures. |
| Zhongke Fuhai / Fullcryo (中科富海) | Beijing, China | 2016 | Cryogenics / helium refrigeration | Large-scale low-temperature refrigeration, helium liquefiers and dewars supplying the quantum hardware supply chain. |
| Zurich Instruments (acquired by Rohde & Schwarz, 2021) | Zurich, Switzerland | 2008 | Control electronics | Quantum control and readout systems: qubit controllers, signal generators, lock-in amplifiers. |
End-use applications (chemistry, finance, logistics, ML), consulting, education, talent, and investment.
| Company | HQ | Founded | Focus | Description |
|---|---|---|---|---|
| Accenture (Quantum) | Dublin, Ireland | 2017 | Quantum strategy & implementation consulting | Accenture's Quantum Lab offers quantum strategy, use-case discovery, prototyping and quantum security services. |
| Airbus Quantum Technologies | Toulouse, France | Aerospace quantum applications + sensing | Airbus explores quantum computing for aerospace optimization and quantum sensing; co-runs the Airbus-BMW Quantum Computing Challenge. | |
| Alqam (unverified) | Saudi Arabia | Quantum optimization applications | Saudi firm applying quantum optimization algorithms across telecom, aviation, logistics, oil-and-gas and finance. | |
| AmberFlux | Hyderabad, India | 2020 | Hybrid quantum integration / services | EdgeAI company offering hybrid classical-quantum workflow integration and assurance services. |
| Angstrom AI | London, United Kingdom | 2024 | Generative molecular simulation | Generative-AI plus quantum-accurate physics (MACE) molecular simulation for drug discovery. |
| ApexQubit | Berkeley, California, United States | 2018 | Drug discovery / biotech | Quantum-and-AI drug discovery platform simulating molecular dynamics to design therapies for hard-to-treat diseases. |
| Aqemia | Paris, France | 2019 | Drug discovery | Drug discovery platform combining quantum/physics-based statistical mechanics and generative AI. |
| Arithmos Quantum Technologies | Dubai, United Arab Emirates | 2025 | Quantum finance / optimization | Develops quantum-hybrid integer-optimization systems for tradable financial markets and portfolio management. |
| Avanetix | Berlin, Germany | 2019 | photonic · Supply-chain optimization | Applies hybrid quantum-classical optimization and ML to automate and optimize supply chains and logistics. |
| Barclays (Quantum) | London, United Kingdom | Quantum algorithms for finance | Barclays explores quantum algorithms for portfolio optimization, transaction settlement and risk, partnering with IBM. | |
| BASF Quantum Computing | Ludwigshafen, Germany | Quantum chemistry/materials simulation | BASF applies quantum computing to chemical reaction simulation, catalysis and logistics, partnering with SEEQC and Kipu Quantum. | |
| BCG (Boston Consulting Group) Quantum Practice | Boston, MA, United States | 1963 | Strategy consulting | BCG's quantum practice advises on technology assessment, business transformation and investment; publishes market research. |
| BMW Group (Quantum) | Munich, Germany | Automotive/mobility quantum applications | BMW Group applies quantum computing to mobility and materials problems and co-runs the Airbus-BMW Quantum Computing Challenge. | |
| Boxcat | Toronto, Canada | 2017 | Rendering / imaging applications | Adapts digital imaging and rendering engines to quantum computation for media and medical imaging; claims first quantum-rendered image. |
| Capgemini (Quantum Lab) | Paris, France | Quantum consulting & implementation | Capgemini's Quantum Lab provides quantum strategy, application development, system integration and workforce training. | |
| ColibrITD | Paris, France | 2019 | Quantum simulation / PDE solving | Quantum software for multiphysics simulation and PDE solving; QUICK-PDE Qiskit Function on IBM Quantum. |
| Compute Everything | St. John's, Canada | 2019 | Quantum chemistry / materials simulation | Quantum and tensor-accelerated algorithms for computational chemistry and materials (finite-temperature impurity solvers). |
| Cosmica | Orlando, Florida, United States | Quantum + AI integration | Orlando firm building integrated Quantum + AI + HPC workflows and optimization/quantum-circuit SDKs. | |
| CreativeQuantum | Berlin, Germany | 2008 | Chemistry consulting | Quantum-chemical simulation services and consulting for chemistry and materials industries. |
| Deloitte Quantum | New York, NY, United States | Consulting / PQC migration | Deloitte's quantum practice offers strategy, roadmaps, use-case identification, PoCs and quantum-cyber readiness. | |
| Eigensystems | Sydney, Australia | 2023 | quantum education | Quantum education startup making tactile learning tools, including the Quokka portable quantum-computer emulator. |
| Elixir (StatUp AI) | Seoul, South Korea | Quantum-hybrid drug discovery | Drug-discovery and biomarker platform using quantum-classical hybrid algorithms and quantum ML. | |
| Entanglement | Miami, Florida, United States | 2017 | Quantum + AI optimization | Fuses quantum and quantum-inspired optimization with AI/ML (Quantum Logic Core) for defense, logistics and maritime. |
| EY (Quantum) | London, United Kingdom | Quantum-safe security & strategy advisory | EY advises on quantum-readiness, cybersecurity, post-quantum cryptography migration, strategy and resilience. | |
| Florence Quantum Labs | Chicago, United States | 2024 | Quantum biology | Unites quantum biology and quantum information science for drug discovery, bioagriculture, bioremediation and biomaterials. |
| ForeQast Technologies | Waterloo, Canada | 2021 | Quantum/ML for logistics optimization | Quantum-hybrid and ML software for logistics: routing, scheduling and inventory optimization. |
| Global Data Quantum | Bilbao, Spain | 2022 | Quantum software & consulting | Basque quantum software and consulting firm applying quantum optimization to logistics, energy and transport. |
| Global Quantum Intelligence | New York, NY, United States | 2022 | Intelligence/advisory | Quantum industry market intelligence, data and advisory services (runs Quantum Computing Report). |
| Goldman Sachs (Quantum) | New York, NY, United States | Quantum algorithms for finance | Goldman Sachs develops quantum algorithms for derivatives/options pricing and risk; an early backer of D-Wave. | |
| Good Chemistry Company (acquired by SandboxAQ, 2024) | Vancouver, Canada | 2021 | Computational chemistry | Quantum and classical molecular-simulation software (QEMIST/Tangelo); acquired by SandboxAQ in Jan 2024. |
| h-bar Quantum Technology Consultants | Sydney, Australia | 2016 | quantum consulting / due diligence | Quantum technology advisory/consultancy providing technical due diligence and strategy for quantum investments. |
| Hafnium Labs | Copenhagen, Denmark | 2016 | Quantum chemistry + AI for process industry | Combines quantum chemistry and AI (Q-props) to predict physical properties for chemicals, energy and pharma R&D. |
| HSBC (Quantum Technologies) | London, United Kingdom | Quantum algorithms for finance + quantum-safe | HSBC's quantum team applies quantum computing to algorithmic bond trading and tests quantum-safe networking with partners. | |
| JPMorganChase (Global Technology Applied Research) | New York, NY, United States | Quantum algorithms for finance | JPMorganChase runs a large bank quantum research team developing quantum algorithms for finance and quantum-safe security. | |
| KPMG (Quantum) | Amstelveen, Netherlands | Quantum risk & financial-services advisory | KPMG advises on quantum implications for risk modeling, market stability and auditing of quantum-driven financial algorithms. | |
| Kuano | Cambridge, United Kingdom | 2020 | Quantum-enabled drug discovery | Quantum-mechanics and AI molecular simulation for enzyme-targeted drug discovery. |
| Kvantify | Copenhagen, Denmark | 2022 | Hybrid quantum-classical software / life science | Quantum and HPC software firm (Qrunch) coupling quantum and classical computing for drug discovery and chemistry. |
| McKinsey & Company (Quantum Technology Monitor) | New York, NY, United States | Quantum strategy consulting & market research | McKinsey advises enterprises on quantum strategy and publishes the annual Quantum Technology Monitor market analysis. | |
| Menten AI | San Francisco, CA, United States | 2018 | Drug discovery | Quantum-assisted protein/peptide drug design combining quantum computing and machine learning. |
| Mercedes-Benz (Quantum, ex-Daimler) | Stuttgart, Germany | EV battery materials quantum simulation | Mercedes-Benz explores quantum computing for next-generation battery chemistry simulation, collaborating with IBM Quantum. | |
| MiQro Era (微观纪元) | Hefei, China | 2022 | Quantum chemistry & optimization software | Applies quantum chemistry/optimization (MiqroForge platform) to drug discovery and new-materials design. |
| Mitsubishi Chemical Group (Quantum) | Tokyo, Japan | Quantum chemistry/materials simulation | Mitsubishi Chemical uses quantum computing for molecular/materials simulation (photochromics, Li-O2 batteries) with PsiQuantum and IBM. | |
| Molecular Quantum Solutions (MQS) | Copenhagen, Denmark | 2019 | Quantum chemistry software / pharma | Quantum-computing chemistry platform (Cebule) combining quantum chemistry, MD and ML for pharma/materials R&D. |
| MolKet | Paris, France | Quantum chemistry & molecular simulation | Quantum molecular dynamics, simulation and AI-driven consulting services on hybrid HPC/AI platforms. | |
| Moth Quantum | London, United Kingdom | 2022 | Quantum software for creative/audio applications | Quantum-powered software for music, media and creative applications. |
| Multiverse Computing (Toronto) | Toronto, Canada | 2019 | Quantum & AI for finance/industry | Quantum and quantum-inspired AI software; CompactifAI LLM compression and tensor-network optimization. |
| Nirvanic Consciousness Technologies | Vancouver, Canada | 2024 | Quantum AI / robotics | Explores quantum-based approaches to machine consciousness, building adaptive quantum-AI software for robotics. |
| Pharmacelera | Barcelona, Spain | 2015 | Computer-aided drug design | Computer-aided drug design using quantum-mechanics and AI (QaiM) algorithms for molecular modeling and screening. |
| Phase Space Computing | Linkoping, Sweden | 2017 | Quantum education hardware | Produces electronic toolboxes that emulate quantum gates/circuits for teaching quantum information science. |
| PiDust | Patras, Greece | 2019 | Quantum chemistry / materials simulation | Uses available quantum computing hardware to simulate drugs, chemicals and materials for new-material design and drug discovery. |
| Polaris Quantum Biotech (POLARISqb) | Durham, NC, United States | 2020 | Quantum drug discovery | Quantum-AI drug discovery platform (QuADD) using quantum annealing for molecular optimization and drug design. |
| POSCO Holdings 📈 | Pohang, South Korea | 2022 | Quantum applications (materials/steel) | Steel/materials holding company exploring quantum computing for materials science; KQIA member. |
| ProteinQure | Toronto, Canada | 2017 | Drug discovery (peptides) | Computational platform (AI plus quantum methods) for designing peptide and protein therapeutics; PQ203 in Phase I. |
| Protiviti Quantum Computing Services | Menlo Park, CA, United States | 2002 | Consulting / quantum readiness | Quantum-computing and quantum-readiness consulting, including PQC/encryption risk and use-case evaluation. |
| Q4Proteins | Zurich, Switzerland | Life sciences | ETH Zurich research team applying quantum algorithms to protein/biomolecular simulation; XPRIZE Quantum Apps finalist. | |
| QAI Ventures | Arlesheim, Switzerland | 2023 | Investment/accelerator | Quantum and AI venture capital fund and startup accelerator; investment arm of QuantumBasel. |
| Qaleon | Madrid, Spain | 2018 | AI / business-intelligence solutions and consulting | Spanish AI and business-intelligence solutions and consulting firm with stated interest in quantum computing. |
| QBee | Leuven, Belgium | 2020 | Quantum software / consulting | Quantum software, micro-architecture, simulator and consulting/education across genomics, chemistry and finance. |
| QDX | Canberra, Australia | 2023 | quantum chemistry / drug discovery | Quantum-mechanics/HPC computational chemistry and drug-discovery platform (Rush) accelerating therapeutic design. |
| Qkrishi | Gurugram, India | 2021 | Quantum finance | Quantum algorithms for finance and adjacent sectors; IFSCA-authorized fintech building a quantum finance sandbox. |
| Qounselor | Grenoble, France | 2025 | Quantum readiness, roadmaps & training | Quantum-computing consultancy offering readiness assessments, integration roadmaps, resource estimates, and team training. |
| Qpurpose | Odense, Denmark | 2022 | Quantum algorithms & applications | Develops quantum algorithms and software applications for healthcare, energy and finance. |
| QRDLab | Kolkata, India | 2020 | Quantum education & consulting | Quantum research, education and consulting initiative partnered with University of Calcutta. |
| QSimulate | Cambridge, Massachusetts, United States | 2018 | Molecular simulation | Quantum-mechanics molecular simulation software (QUELO) for pharma drug discovery and materials. |
| Quanscient | Tampere, Finland | 2021 | Multiphysics simulation + quantum | Cloud-native multiphysics simulation platform unifying classical solvers, quantum algorithms and AI for engineering. |
| Quantonation | Paris, France | 2018 | Venture capital | Early-stage venture capital fund dedicated to quantum technologies and deep physics; offices in Paris and Boston. |
| Quantum Computing Report | United States | 2015 | Industry intelligence / advisory | Quantum-industry news, analysis and market-intelligence service tracking companies, qubit counts and funding. |
| Quantum Generative Materials (GenMat) (acquired by Comstock, 2024) | Austin, TX, United States | 2021 | Quantum/AI materials discovery | Materials-science company combining quantum computing and ML/AI to simulate atomic structures and discover novel materials. |
| Quantum Intelligence (QIC) | Seoul, South Korea | 2020 | Quantum drug discovery | Quantum Intelligence Corp; QUEST platform applies quantum/AI modeling to molecular properties, ADME/Tox and drug-target binding. |
| Quantum Mads | Bilbao, Spain | 2020 | Industrial quantum optimization (QSaaS) | Hybrid quantum software-as-a-service for industrial optimization in finance, energy and supply chain. |
| Quantum Phi | Prague, Czechia | 2018 | Quantum consulting / analysis / education | Quantum technology consulting and analysis across computing, communication, imaging and sensing; defence/security focus. |
| Quantum Research Sciences | Lafayette, Indiana, United States | 2017 | Defense quantum software | Delivers operational quantum software for defense (supply chain, optimization), running workloads on quantum hardware. |
| Quantum Strategy Institute | Mississauga, Canada | 2021 | Advisory & thought leadership | Quantum advisory, education and thought-leadership network for enterprises adopting quantum. |
| Quantum Technology Foundation (Thailand) | Bangkok, Thailand | 2019 | Quantum optimization & consulting | Thai quantum software house providing hybrid quantum optimization for finance, energy, logistics and networks. |
| Quantum-South | Montevideo, Uruguay | 2019 | Quantum optimization for logistics | Quantum and quantum-inspired optimization for air/maritime cargo; first Latin American member of IBM Quantum Network. |
| QuantumTX (Quantum Technology Exchange) | Adelaide, Australia | 2019 | quantum commercialisation / advisory | Commercialisation/advisory program growing quantum-enabled businesses across mining, energy, agri, defence and space. |
| QuantyMize | Tel Aviv, Israel | Quantum optimization applications | Quantum algorithms company offering accelerating algorithms (ECHO/QUBO) for industrial optimization, notably energy management. | |
| Quaxys | Southern Maryland, United States | Quantum / RF education & training | Quaxys Academy trains engineers in RF and superconducting-quantum-hardware skills with courses, a book and a remote RF lab. | |
| Qubit Engineering | Knoxville, Tennessee, United States | 2018 | Energy / optimization applications | Hybrid quantum-classical and ML optimization for wind-farm layout and power-grid siting in the energy sector. |
| Qubit Pharmaceuticals | Paris, France | 2020 | Drug discovery | Molecular-simulation platform (Hyperion) applying quantum and HPC methods to drug discovery. |
| QubitSolve | Morgantown, West Virginia, United States | 2022 | Quantum CFD software | Develops quantum computing software (variational quantum CFD) for high-fidelity computational fluid dynamics. |
| Quminex | Sherbrooke, Canada | 2024 | Quantum-AI mineral exploration | Quantum-AI platform analyzing geoscience data to improve efficiency and sustainability of critical mineral exploration. |
| QURECA | Glasgow, United Kingdom | 2019 | Quantum education & workforce / consulting | Quantum technology education, training and business-development services for the quantum workforce. |
| RAQS Quantum | Singapore, Singapore | Quantum consulting & edge algorithms | Prepares APAC enterprises for quantum via consulting plus quantum-inspired edge chips and algorithms. | |
| SandboxAQ | Palo Alto, CA, United States | 2022 | Quantum-inspired AI applications & PQC | Combines AI with quantum tech; AQNav magnetic-anomaly navigation, medical magnetometry, and PQC security products. |
| SQK (QMEDIC) | South Korea | Quantum-physics medical imaging AI | Physics-constrained quantum-AI medical imaging (QMEDIC) ensuring physical consistency in CT/MRI reconstruction. | |
| Terra Quantum | St. Gallen, Switzerland | 2019 | QaaS/consulting | Quantum-as-a-service algorithms, optimization and quantum-safe security across industries. |
| The Quantum Insider (Resonance) | Toronto, Canada | 2020 | Media/intelligence | Quantum technology news, market intelligence and data platform under Resonance Alliance. |
| Unitary Zero Space | Helsinki, Finland | 2020 | Quantum consultancy / cybersecurity | Hardware-agnostic quantum computing consultancy and services spanning commercialization, education and cybersecurity. |
| Vienna Quantum Consulting | Vienna, Austria | 2020 | Consulting | Quantum computing strategy, consulting and implementation services. |
| Volkswagen Group (Quantum Computing) | Wolfsburg, Germany | Automotive quantum applications | Volkswagen explores quantum computing for battery materials, traffic optimization and logistics, partnering with IQM and others. | |
| Wells Fargo (Quantum) | San Francisco, CA, United States | Quantum algorithms for finance | Wells Fargo developers built quantum finance algorithms with IBM, among US bank quantum innovators. | |
| XtalPi (晶泰科技) 📈 | Shenzhen, China | 2015 | AI/quantum-driven drug & materials discovery | AI- and quantum-physics-driven drug discovery and materials R&D platform. |
Major technology, hardware, telecom, defense, and finance organizations with dedicated quantum programs. These are not standalone startups, so they are listed separately from the sector tables above.
| Organization | HQ | Quantum focus | Notes |
|---|---|---|---|
| Atlantic Microwave (acquired by ETL Systems, 2019) | Braintree, United Kingdom | RF/microwave components | RF/microwave components and cryogenic amplifiers applicable to quantum control electronics. |
| AWS Center for Quantum Computing | Pasadena, CA, United States | superconducting · Superconducting cat qubits | AWS quantum effort: Braket cloud aggregates multiple QPUs/simulators; in-house Center develops cat-qubit hardware (Ocelot). |
| Baidu Quantum (百度量子) | Beijing, China | Quantum software / cloud (hardware exited) | Quantum software platforms (Paddle Quantum, Quantum Leaf); donated superconducting hardware lab to BAQIS in 2024. |
| Bosch Quantum Sensing | Ludwigsburg, Germany | NV-center/diamond · Magnetometry | Bosch unit building compact NV-diamond quantum magnetic-field sensors for medical and mobility uses. |
| Cisco Quantum Labs | San Jose, CA, United States | Quantum networking + entanglement infrastructure | Cisco develops quantum networking tech (prototype entanglement chip) and partners with IBM on a distributed quantum network by ~2030. |
| Deutsche Telekom (Quantum) | Bonn, Germany | Quantum-safe networks + quantum communication | Deutsche Telekom researches quantum communication, QKD and quantum-safe networking for telecom infrastructure. |
| Edwards Vacuum | Burgess Hill, United Kingdom | Vacuum and cryogenic technologies | Vacuum and cryogenic pumps and systems used in quantum hardware fabrication and operation. |
| Element Six | Didcot, United Kingdom | NV-center/diamond · Synthetic diamond / NV-center materials | Synthetic diamond materials, including NV-center-grade diamond for quantum sensing and computing. |
| Eviden (Atos) Quantum | Les Clayes-sous-Bois, France | Quantum software platform | Eviden (Atos) builds the Qaptiva quantum emulation appliance, HPC-quantum integration and quantum consulting/training. |
| Exaion | Croissy-Beaubourg, France | HPC & quantum cloud access | EDF Group subsidiary providing decarbonized HPC and quantum cloud access (hosts Quandela hardware). |
| Fujitsu | Tokyo, Japan | superconducting · Full-stack superconducting + Digital Annealer | Co-developed 256-qubit superconducting machine with RIKEN; offers Digital Annealer quantum-inspired optimizer. |
| G42 | Abu Dhabi, United Arab Emirates | AI holding with quantum partnerships | AI holding company with a Quantum Research Center and quantum partnerships (IonQ, Microsoft, D-Wave). |
| Google Quantum AI | Santa Barbara, CA, United States | superconducting · Full-stack superconducting | Google's quantum division builds superconducting processors (Sycamore, Willow) focused on error correction and supremacy. |
| Hewlett Packard Enterprise (HPE) | Houston, TX, United States | superconducting · Superconducting / quantum-HPC integration | Hewlett Packard Labs leads a quantum-HPC integration framework selected for DARPA QBI, with Qolab on superconducting HW. |
| Hitachi | Tokyo, Japan | spin/silicon · Silicon spin qubits + CMOS annealing | R&D in silicon spin-qubit technology and a CMOS quantum-annealing chip for combinatorial optimization. |
| Hon Hai Research Institute (Foxconn) Quantum Computing Center | New Taipei City, Taiwan | trapped-ion · Trapped-ion R&D & quantum communications | Foxconn research arm running Taiwan's first trapped-ion quantum lab (opened 2023); roadmap to prototype by 2027. |
| Honeywell Quantum | Charlotte, NC, United States | trapped-ion · Trapped-ion hardware (via Quantinuum stake) | Honeywell originated trapped-ion quantum hardware and remains the largest (~54%) shareholder of Quantinuum. |
| Huawei Cloud Quantum (华为云量子) | Shenzhen, China | Quantum simulation software & cloud | Runs the HiQ quantum simulator and quantum-algorithm research integrated with Huawei Cloud services. |
| IBM Quantum | Yorktown Heights, NY, United States | superconducting · Full-stack superconducting | IBM's quantum division builds superconducting QPUs (Heron, Condor) and the Qiskit stack, targeting fault-tolerant systems. |
| Infineon Technologies (Ion Trap unit) | Villach, Austria | trapped-ion · Ion-trap chips | Fabricates ion-trap chips and control electronics for quantum hardware; develops PQC in chips. |
| Intel Quantum | Hillsboro, OR, United States | spin/silicon · Silicon spin qubits | Develops silicon spin-qubit chips (Tunnel Falls) and cryogenic control electronics (Horse Ridge) via its CMOS fabs. |
| KT Corporation | Seongnam, South Korea | QKD field trials | Telecom operator running QKD field trials and quantum-secure data links; leader in QKD international standards. |
| Microsoft Quantum | Redmond, WA, United States | topological · Topological / full-stack | Pursues topological qubits (Majorana 1 chip, 2025) and runs Azure Quantum cloud aggregating multiple hardware backends. |
| NEC | Tokyo, Japan | annealing · Quantum annealing + gate-based research | Develops superconducting quantum-annealing machines and LHZ-architecture units for fully-connected optimization. |
| Nokia Bell Labs (Quantum) | Murray Hill, NJ, United States | Quantum-safe networking research | Nokia Bell Labs researches quantum networking and quantum-safe cryptography, including space-based quantum-secure optical trials. |
| NTT (NTT Research / Coherent Ising Machine) | Tokyo, Japan | photonic · Photonic / Coherent Ising Machine | Telecom giant developing photonic Coherent Ising Machines and optical quantum computing (with OptQC/UTokyo). |
| NTT Research / NTT Quantum | Sunnyvale, CA, United States | photonic · Coherent Ising Machine (photonic) + basic research | NTT Research runs the photonic Coherent Ising Machine platform and deep quantum/optical basic research; parent NTT is Tokyo-based. |
| NVIDIA Quantum (NVAQC / CUDA-Q) | Santa Clara, CA, United States | Hybrid quantum-classical platform, GPU acceleration | NVIDIA builds the CUDA-Q hybrid platform, DGX Quantum, NVQLink and the Boston NVAQC center linking GPUs to QPUs. |
| Oxford Instruments NanoScience (acquired by Quantum Design, 2026) | Abingdon, United Kingdom | Cryogenics / dilution refrigerators | Dilution refrigerators (Proteox), superconducting magnets and ultra-low-temperature cryogenic systems. |
| Samsung Electronics (Samsung SDS) | Suwon, South Korea | PQC + QRNG-secured devices | Develops post-quantum cryptography (AIMer) and ships QRNG-secured Galaxy Quantum phones with IDQ chips. |
| SAP Quantum | Walldorf, Germany | Enterprise quantum applications | SAP investigates quantum computing for enterprise/business optimization and supply chain within its innovation programs. |
| Siemens Quantum | Munich, Germany | Industrial quantum applications + simulation | Siemens explores quantum computing for industrial simulation, design and optimization, and partners on quantum-classical workflows. |
| SK Telecom | Seoul, South Korea | QKD networks + QRNG | Telecom operator deploying QKD networks, QRNG-secured 5G and quantum-secured smartphones with ID Quantique. |
| Tencent Quantum Lab (腾讯量子实验室) | Shenzhen, China | Quantum algorithms & simulation | Tencent lab researching quantum algorithms (VQE) and applying them to drug molecular dynamics and screening. |
| Thales Quantum | Paris, France | Quantum-safe security, PQC, quantum sensing | Thales develops quantum-safe security (PQC, quantum-safe 5G SIM/eSIM), quantum sensing and submits PQC methods to NIST. |
| Toshiba | Cambridge, United Kingdom | QKD systems | Long-running QKD program; commercializes fiber-based QKD systems and has deployed quantum-secured metro networks in London and Tokyo. |
Quantum-first companies that trade on public markets (also listed within their sector above).
| Company | HQ | Category | Description |
|---|---|---|---|
| 01 Communique (IronCAP) 📈 | Toronto, Canada | Quantum Security & Post-Quantum Cryptography | IronCAP code-based post-quantum cryptography for email/digital-asset encryption and signing. |
| Aeluma 📈 | Goleta, California, United States | Components & Enabling Technologies | Compound-semiconductor photonic and sensing devices on silicon for quantum, AI and comms. |
| AmpliTech Group 📈 | Bohemia, New York, United States | Components & Enabling Technologies | Low-noise amplifiers and RF/microwave components for quantum, satcom and 5G/6G. |
| Analog Devices 📈 | Wilmington, Massachusetts, United States | Components & Enabling Technologies | Precision analog, RF and data-converter components used in quantum control electronics. |
| Anritsu 📈 | Atsugi, Japan | Components & Enabling Technologies | Test-and-measurement instrumentation supplier serving quantum hardware development. |
| Archer Materials 📈 | Adelaide, Australia | Quantum Computing Hardware | ASX-listed firm developing the carbon-based 12CQ room-temperature qubit chip alongside A1 Biochip products. |
| Arqit Quantum 📈 | London, United Kingdom | Quantum Security & Post-Quantum Cryptography | Symmetric key agreement (SKA-Platform) and quantum-safe encryption for telecom, government and defence. |
| ASP Isotopes 📈 | Washington, D.C., United States | Components & Enabling Technologies | Enriched silicon-28 and other isotope materials for spin-qubit and quantum-computing applications. |
| BTQ Technologies 📈 | Vancouver, Canada | Quantum Security & Post-Quantum Cryptography | Post-quantum cryptography and quantum-safe networking; designs PQC hardware accelerators and quantum-safe blockchain. |
| Coherent 📈 | Saxonburg, Pennsylvania, United States | Components & Enabling Technologies | Lasers and photonic devices, vertically integrated optics and components for quantum systems. |
| Creotech Instruments 📈 | Piaseczno, Poland | Components & Enabling Technologies | Modular electronics and control systems for quantum and space applications. |
| Creotech Instruments / Creotech Quantum 📈 | Piaseczno (Warsaw area), Poland | Quantum Computing Hardware | Polish maker of quantum control electronics, QKD and a domestic superconducting quantum computer for the EU. |
| D-Wave Quantum 📈 | Palo Alto, CA, United States | Quantum Computing Hardware | World's first commercial quantum computer supplier; quantum annealing (Advantage) plus an emerging gate-model roadmap. |
| Elmos Semiconductor 📈 | Dortmund, Germany | Quantum Security & Post-Quantum Cryptography | Developed world's smallest QRNG chip (2026 German Innovation Award) for embedded security. |
| Exail (Quantum, formerly Muquans/iXblue) 📈 | Saint-Germain-en-Laye, France | Quantum Sensing & Metrology | Absolute quantum gravimeters (cold-atom) for geophysics and navigation; integrates former Muquans technology. |
| Filtronic 📈 | Sedgefield, United Kingdom | Components & Enabling Technologies | Custom cryogenic RF and microwave filters and components for superconducting quantum systems. |
| FormFactor (HPD) 📈 | Livermore, California, United States | Components & Enabling Technologies | Cryogenic probe stations, dilution refrigerators (HPD) and high-speed cryogenic chip test systems. |
| Frequency Electronics 📈 | Mitchel Field, NY, United States | Quantum Sensing & Metrology | Precision atomic clocks and frequency/timing systems for satellites, defense and space. |
| Fujikura 📈 | Tokyo, Japan | Components & Enabling Technologies | Manufactures superconducting wires, cables and optical-fiber components used in quantum hardware. |
| GlobalFoundries 📈 | Malta, New York, United States | Components & Enabling Technologies | 300mm semiconductor foundry fabricating photonic and silicon quantum chips at scale. |
| Hamamatsu Photonics 📈 | Hamamatsu, Japan | Components & Enabling Technologies | Photonics manufacturer supplying single-photon detectors, SPADs and light sources for quantum systems. |
| Henan Shijia Photons Technology (仕佳光子) 📈 | Hebi, China | Components & Enabling Technologies | Optical/photonic chip and component maker (PLC/AWG/DFB) involved in QRNG chip and optical-component supply. |
| Horizon Quantum Computing 📈 | Singapore, Singapore | Software, Algorithms & Error Correction | Quantum software and automated compilers (Triple Alpha); also operates its own quantum hardware testbed. |
| ICTK 📈 | Seoul, South Korea | Quantum Security & Post-Quantum Cryptography | Physically Unclonable Function (PUF) chip and Q-PUF quantum security provider for IoT and smart devices. |
| Infleqtion 📈 | Louisville, CO, United States | Quantum Computing Hardware | Cold-atom firm: Tiqker optical clock, Rydberg RF sensors, inertial sensing, and neutral-atom computing (Superstaq SW). |
| IonQ 📈 | College Park, MD, United States | Quantum Computing Hardware | First pure-play public quantum company; builds trapped-ion processors (Forte, Tempo) and quantum networking systems. |
| Keysight Technologies 📈 | Santa Rosa, California, United States | Components & Enabling Technologies | Quantum control, characterization and test-and-measurement instruments and Labber software. |
| Nanoco Technologies 📈 | Runcorn, United Kingdom | Components & Enabling Technologies | Cadmium-free quantum dots and nanomaterials for displays, sensing and imaging. |
| Oxford Instruments 📈 | Abingdon, United Kingdom | Components & Enabling Technologies | Cryogenic systems including Proteox dilution refrigerators enabling quantum hardware. |
| ParTec 📈 | Munich, Germany | Cloud & Access Platforms | Sovereign HPC-quantum integration; modular supercomputing software and full quantum-system integration. |
| POSCO Holdings 📈 | Pohang, South Korea | Applications, Consulting & Services | Steel/materials holding company exploring quantum computing for materials science; KQIA member. |
| QinetiQ 📈 | Farnborough, United Kingdom | Quantum Sensing & Metrology | Defence technology firm with quantum sensing and position/navigation/timing programmes. |
| Quantinuum 📈 | Broomfield, CO, United States | Quantum Computing Hardware | Full-stack trapped-ion company (TKET compiler) formed by merging Honeywell Quantum Solutions and Cambridge Quantum. |
| Quantum Base 📈 | Lancaster, United Kingdom | Quantum Security & Post-Quantum Cryptography | Atomic-level Q-ID anti-counterfeiting and authentication tags verifiable by smartphone; Lancaster spinout. |
| Quantum Computing Inc. (QCi) 📈 | Hoboken, NJ, United States | Quantum Computing Hardware | Photonic 'Entropy Quantum Computing' optimization machines (Dirac series) and thin-film lithium niobate photonic chips. |
| Quantum eMotion 📈 | Montreal, Canada | Quantum Security & Post-Quantum Cryptography | Semiconductor (quantum-tunneling) QRNG chip hardware and quantum-safe security software. |
| QuantumCTek (国盾量子) 📈 | Hefei, China | Quantum Communication & Networking | China's dominant QKD vendor; supplies QKD devices, key management and network gear behind the national quantum-secure backbone. |
| QuantumCTek-affiliated China Telecom Quantum Group (中电信量子) 📈 | Hefei, China | Quantum Communication & Networking | State-owned operator delivering hybrid QKD+PQC services, quantum-encrypted lines and 5G quantum encryption. |
| Rigetti Computing 📈 | Berkeley, CA, United States | Quantum Computing Hardware | Public full-stack company building superconducting tunable-transmon QPUs in its own Fab-1 (Ankaa, modular chips). |
| SAES Group (Rial Vacuum) 📈 | Lainate, Italy | Components & Enabling Technologies | Getters and UHV vacuum systems for ion-trap and atomic quantum hardware; Rial Vacuum acquired 2021. |
| SEALSQ 📈 | Geneva, Switzerland | Quantum Security & Post-Quantum Cryptography | Post-quantum secure semiconductors (QS7001), PKI and IoT hardware security; Nasdaq-listed WISeKey subsidiary. |
| Senetas 📈 | Melbourne, Australia | Quantum Security & Post-Quantum Cryptography | High-assurance network encryption provider delivering quantum-resistant (NIST PQC) encryption for defence/government. |
| SkyWater Technology 📈 | Bloomington, Minnesota, United States | Components & Enabling Technologies | US semiconductor foundry providing dedicated fabrication for quantum and specialty chips. |
| STMicroelectronics 📈 | Geneva, Switzerland | Components & Enabling Technologies | Semiconductor manufacturer with process capabilities relevant to qubit and quantum chip fabrication. |
| Sumitomo Heavy Industries (SHI Cryogenics) 📈 | Tokyo, Japan | Components & Enabling Technologies | Gifford-McMahon and pulse-tube cryocoolers and cryogenic refrigeration for quantum and research systems. |
| SuperQ Quantum Computing 📈 | Calgary, Canada | Cloud & Access Platforms | Calgary firm whose 'Super' platform unifies quantum annealing, gate-based QC and HPC behind a chat-style interface. |
| ULVAC Cryogenics 📈 | Chigasaki, Japan | Components & Enabling Technologies | Supplies cryocoolers and cryogenic equipment used in superconducting quantum computers. |
| WISeKey 📈 | Geneva, Switzerland | Quantum Security & Post-Quantum Cryptography | Cybersecurity, PKI and digital identity firm deploying post-quantum root keys and quantum-safe IoT. |
| Xanadu Quantum Technologies 📈 | Toronto, Canada | Quantum Computing Hardware | Photonic quantum computers using squeezed light; maker of PennyLane open-source QML framework. |
| XtalPi (晶泰科技) 📈 | Shenzhen, China | Applications, Consulting & Services | AI- and quantum-physics-driven drug discovery and materials R&D platform. |
- Total organizations: 722
- Listed in sector tables: 686
- Big-tech / enterprise divisions: 36
- Publicly traded pure-plays: 50
By sector:
| Sector | Count |
|---|---|
| Quantum Computing Hardware | 107 |
| Software, Algorithms & Error Correction | 95 |
| Cloud & Access Platforms | 19 |
| Quantum Sensing & Metrology | 70 |
| Quantum Communication & Networking | 57 |
| Quantum Security & Post-Quantum Cryptography | 87 |
| Components & Enabling Technologies | 191 |
| Applications, Consulting & Services | 96 |
Top countries / regions:
| Country | Count |
|---|---|
| United States | 170 |
| Canada | 66 |
| United Kingdom | 66 |
| Germany | 62 |
| China | 33 |
| France | 31 |
| India | 26 |
| Japan | 26 |
| Australia | 25 |
| Switzerland | 23 |
| Netherlands | 22 |
| South Korea | 21 |
- The Quantum Insider: quantum industry news and company intelligence.
- Quantum Computing Report: news, players, and market tracking.
- QED-C: the US Quantum Economic Development Consortium.
- toptierstartups: The Ultimate List of Quantum Computing Startups
- Wikipedia: Companies involved in quantum computing or communication
Contributions are very welcome! To add, update, or remove a company, edit data/startups.json and run python3 scripts/generate.py to regenerate this README and the CSV, then open a pull request. See CONTRIBUTING.md for the entry schema and guidelines. You can also just open an issue and we'll add it.
This directory is compiled from public sources for informational purposes only. Founding years, locations, categorizations, and funding/listing status may be incomplete or out of date, and inclusion here is not an endorsement. Found an error? Please open an issue or PR. Company names and trademarks belong to their respective owners.
To the extent possible under law, the contributors have waived all copyright and related or neighboring rights to this dataset and list (CC0 1.0).