Companies
Quantum organization directory
Compare published quantum companies, labs, investors, and ecosystem organizations by category, stage, headquarters, focus area, and verified source trail.
Aegiq
Hardware
Aegiq develops photonic quantum computing systems, quantum light sources, and related software for scalable quantum applications. Its Artemis photonic quantum computer is deployed at the UK National Quantum Computing Centre, and the company has reported integrating NVIDIA Ising AI models into Artemis calibration workflows.
Sheffield, England, UK
Aeponyx
Hardware
Aeponyx develops photonic integrated circuit technologies including silicon nitride and hybrid photonic integration. Pasqal acquired Aeponyx in 2025 and reported in July 2026 that Aeponyx would anchor a Canadian PIC packaging center of competency for quantum and sensing applications at C2MI.
Montreal, Quebec, Canada
Alice & Bob
Hardware
Alice & Bob develops fault-tolerant quantum computing hardware based on cat qubits. Founded: 2020. Estimated employees: 51-200. Known funding: €130M+ reported. Notable products: Cat qubit processor roadmap.
Paris, France
Atlantic Quantum
Hardware
Atlantic Quantum develops superconducting quantum processors with noise-protected circuit designs. Founded: 2022. Estimated employees: 11-50. Known funding: Unknown. Notable products: Superconducting quantum processor technology.
Cambridge, Massachusetts, USA
Atom Computing
Hardware
Atom Computing develops gate-based neutral-atom quantum computers using optically trapped atoms. Founded: 2018. Estimated employees: 51-200. Known funding: $60M+ reported. Notable products: Phoenix system, neutral-atom processors.
Berkeley, California, USA
D-Wave Quantum
Hardware
D-Wave builds quantum annealing systems, hybrid solvers, and gate-model quantum computing technology. Founded: 1999. Estimated employees: 201-500. Known funding: Public company. Notable products: Advantage2, Leap quantum cloud service.
Burnaby, British Columbia, Canada
Diraq
Hardware
Diraq develops silicon quantum dots and CMOS-compatible qubit technology. Founded: 2022. Estimated employees: 11-50. Known funding: Unknown. Notable products: Silicon quantum dot processors.
Sydney, New South Wales, Australia
Google Quantum AI
Hardware
Google Quantum AI develops superconducting quantum processors, quantum error correction, and quantum algorithms. Founded: 2012. Estimated employees: 501-1000. Known funding: Parent company funded. Notable products: Sycamore, Willow, Quantum AI research stack.
Santa Barbara, California, USA
IBM Quantum
Hardware
IBM's quantum division develops superconducting quantum processors, systems, software, and cloud access through IBM Quantum Platform. Founded: 2016. Estimated employees: 1000+. Known funding: Parent company funded. Notable products: IBM Quantum Platform, IBM Quantum System Two, Qiskit.
Yorktown Heights, New York, USA
IonQ
Hardware
IonQ builds trapped-ion quantum computers available through cloud platforms and direct enterprise access. Founded: 2015. Estimated employees: 201-500. Known funding: Public company. Notable products: IonQ Forte, IonQ Aria, IonQ Forte Enterprise.
College Park, Maryland, USA
IQM Quantum Computers
Hardware
IQM develops superconducting quantum processors and on-premises quantum computers for research centers, enterprises, HPC centers, and national laboratories. Founded in 2018 and headquartered in Espoo, Finland, IQM completed a business combination with Real Asset Acquisition Corp. in July 2026, with ADSs trading on Nasdaq under IQMX.
Espoo, Finland
Microsoft Azure Quantum
Hardware
Microsoft operates Azure Quantum and pursues topological quantum computing hardware and quantum software tooling. Founded: 2019. Estimated employees: 1000+. Known funding: Parent company funded. Notable products: Azure Quantum, Q#, Majorana program.
Redmond, Washington, USA
ORCA Computing
Hardware
ORCA Computing builds photonic quantum computing systems using quantum memory and telecom-compatible components. Founded: 2019. Estimated employees: 51-200. Known funding: $15M+ reported. Notable products: PT Series photonic quantum computers.
London, England, UK
Oxford Quantum Circuits
Hardware
OQC develops superconducting quantum computers and quantum-computing-as-a-service deployments. Founded: 2017. Estimated employees: 51-200. Known funding: £260M+ reported. Notable products: OQC Toshiko, OQC Lucy.
Reading, England, UK
PASQAL
Hardware
PASQAL develops neutral-atom quantum processors and quantum computing software for industrial applications. Founded: 2019. Estimated employees: 201-500. Known funding: €140M+ reported. Notable products: FRESNEL neutral atom platform.
Massy, France
Photonic Inc.
Hardware
Photonic develops distributed quantum computing hardware using spin-photon interfaces in silicon. Founded: 2016. Estimated employees: 51-200. Known funding: $100M+ reported. Notable products: Entanglement-first photonic quantum architecture.
Vancouver, British Columbia, Canada
PsiQuantum
Hardware
PsiQuantum is developing a fault-tolerant photonic quantum computer using silicon photonics and cryogenic infrastructure. Founded: 2016. Estimated employees: 201-500. Known funding: $1B+ reported. Notable products: Photonic fault-tolerant quantum computer program.
Palo Alto, California, USA
Qblox
Hardware
Qblox builds scalable control-stack electronics for quantum computers. Founded: 2019. Estimated employees: 51-200. Known funding: Unknown. Notable products: Cluster, quantum control stacks.
Delft, Netherlands
Qilimanjaro Quantum Tech
Hardware
Qilimanjaro develops analog quantum processors and quantum algorithms for optimization and simulation. Founded: 2019. Estimated employees: 11-50. Known funding: Unknown. Notable products: Analog quantum processors.
Barcelona, Spain
Qolab
Hardware
Qolab develops superconducting quantum computing hardware with a focus on semiconductor manufacturing discipline and utility-scale systems. The company announced $54.2 million in Series B financing and related commitments led by UC Investments in July 2026.
Santa Barbara, California, USA
Quandela
Hardware
Quandela develops photonic quantum computers, single-photon sources, and cloud-accessible systems. Founded: 2017. Estimated employees: 51-200. Known funding: €50M+ reported. Notable products: Ascella, MosaiQ, Quandela Cloud.
Massy, France
Quantinuum
Hardware
Quantinuum develops trapped-ion quantum computers, quantum software, quantum chemistry tools, and cybersecurity products. Founded: 2021. Estimated employees: 501-1000. Known funding: $625M+. Notable products: H-Series quantum computers, InQuanto, TKET, Quantum Origin.
Broomfield, Colorado, USA and Cambridge, UK
Quantum Brilliance
Hardware
Quantum Brilliance develops room-temperature diamond quantum accelerators. Founded: 2019. Estimated employees: 51-200. Known funding: Unknown. Notable products: Quantum Development Kit, diamond quantum accelerators.
Canberra, Australia and Stuttgart, Germany
Quantum Circuits Inc.
Hardware
Quantum Circuits builds superconducting quantum computers using modular, error-detecting architecture. Founded: 2015. Estimated employees: 51-200. Known funding: $80M+ reported. Notable products: Aquila quantum computing platform.
New Haven, Connecticut, USA