Companies
Quantum organization directory
Compare published quantum companies, labs, investors, and ecosystem organizations by category, stage, headquarters, focus area, and verified source trail.
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
Oxford Quantum Solutions Lab
Consulting
Oxford Quantum Solutions Lab provides consulting, training, and quantum technology implementation support. Founded: Unknown. Estimated employees: 1-10. Known funding: Unknown. Notable products: Quantum consulting services.
Oxford, 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
Phasecraft
Software
Phasecraft develops quantum algorithms for near-term and fault-tolerant quantum computers. Founded: 2019. Estimated employees: 11-50. Known funding: £17M+ reported. Notable products: Quantum simulation algorithms.
Bristol, England, UK
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
Post-Quantum
Quantum Security
Post-Quantum develops post-quantum identity, VPN, and cryptographic security technologies. Founded: 2009. Estimated employees: 11-50. Known funding: Unknown. Notable products: NTS-KEM, post-quantum VPN and identity products.
London, England, UK
PQShield
Quantum Security
PQShield develops post-quantum cryptography hardware, software, and IP for enterprises and semiconductor customers. Founded: 2018. Estimated employees: 51-200. Known funding: $50M+ reported. Notable products: PQSDK, PQPlatform, PQCryptoLib.
Oxford, England, UK
Princeton Quantum Initiative
University
Princeton Quantum Initiative coordinates research in quantum materials, computing, devices, and information science. Founded: Unknown. Estimated employees: Unknown. Known funding: University funded. Notable products: Princeton quantum research programs.
Princeton, New Jersey, USA
ProteinQure
Software
ProteinQure develops computational protein and peptide design software using quantum and AI methods. Founded: 2017. Estimated employees: 11-50. Known funding: Unknown. Notable products: Protein design platform.
Toronto, Ontario, 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
Q-CTRL
Software
Q-CTRL develops quantum infrastructure software for error suppression, control, sensing, and education. Founded: 2017. Estimated employees: 51-200. Known funding: $80M+ reported. Notable products: Fire Opal, Boulder Opal, Black Opal.
Sydney, New South Wales, Australia
Q.ANT
Quantum Sensors
Q.ANT develops photonic quantum sensors and photonic computing technology for industrial measurement and computing. Founded: 2018. Estimated employees: 51-200. Known funding: Unknown. Notable products: Photonic quantum sensor systems.
Stuttgart, Germany
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
qBraid
Software
qBraid provides a cloud-based platform for quantum software development, education, and hardware access. Founded: 2020. Estimated employees: 11-50. Known funding: Unknown. Notable products: qBraid Lab, qBraid SDK.
Chicago, Illinois, USA
QC Ware
Software
QC Ware develops quantum algorithms, software, and applications for optimization, chemistry, and machine learning. Founded: 2014. Estimated employees: 51-200. Known funding: Unknown. Notable products: Forge, Promethium.
Palo Alto, California, USA
QDNL Participations
Investment Firm
QDNL Participations invests in and supports Dutch and European quantum technology startups. Founded: 2023. Estimated employees: 1-10. Known funding: Investment firm. Notable products: Quantum venture portfolio.
Delft, Netherlands
QED-C
Other
The Quantum Economic Development Consortium supports the U.S. quantum industry ecosystem and commercialization. Founded: 2018. Estimated employees: 11-50. Known funding: Member funded. Notable products: Quantum industry consortium programs.
Washington, D.C., USA
Qedma
Software
Qedma develops software tools for quantum error mitigation and characterization. Founded: 2020. Estimated employees: 11-50. Known funding: Unknown. Notable products: QEM and characterization tools.
Tel Aviv, Israel
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
Qnami
Quantum Sensors
Qnami develops diamond quantum microscopes and scanning NV magnetometry systems. Founded: 2017. Estimated employees: 11-50. Known funding: Unknown. Notable products: ProteusQ quantum microscope.
Basel, Switzerland
QNu Labs
Quantum Security
QNu Labs develops quantum key distribution, quantum random number generation, and quantum-safe security products. Founded: 2016. Estimated employees: 51-200. Known funding: Unknown. Notable products: Armos, Tropos, Hodos.
Bengaluru, India
Qognitive
Quantum AI
Qognitive develops quantum machine learning and quantum software tools for enterprise applications. Founded: Unknown. Estimated employees: 1-10. Known funding: Unknown. Notable products: Quantum ML tools.
Munich, Germany
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
QphoX
Quantum Networking
QphoX develops quantum transduction technology to connect quantum processors through optical networks. Founded: 2021. Estimated employees: 11-50. Known funding: €2M+ reported. Notable products: Quantum modem technology.
Delft, Netherlands