Modalities
Silicon
Organisations tagged silicon, including spin qubits and silicon photonics where the directory used that tag. 13 records use this tag. A company can carry more than one.
Paris, France
Carbon-nanotube spin qubits. One of the five hardware startups in France’s PROQCIMA programme.
Sydney; US ops cited in Palo Alto, Boston, Chicago, Australia
Company-asserted >99% two-qubit fidelity on industrially fabricated devices (late 2025, company/secondary). Advantage target ~2029
CMOS quantum-dot spin qubits on a foundry-compatible path. DARPA QBI Stage B. NRFC equity of A$20 million. Headcount cited at 70+ in Sydney at the NRFC announcement. US CHIPS equity-award engagement was reported and should be checked against final Commerce awards. A system capable of quantum advantage was targeted around 2029.
Dublin; Silicon Valley presence, Ireland
Silicon CMOS quantum processors and rack-mounted systems. €51.5 million funding in January 2026. Ireland’s standout commercial quantum company in the brief; the wider ecosystem is described as still thin.
Malibu, CA, United States
Silicon-spin and sensing/materials work. The acquisition is IBM’s second track beside superconducting.
Yorktown Heights, NY, United States
Reported Heron ~156 qubits; Condor 1,121 qubits reported
Superconducting systems, Qiskit, and Quantum System Two, with a Starling fault-tolerant roadmap cited around 2029. Acquired HRL Laboratories in August 2026 for a silicon-spin track. Named in reported CHIPS equity awards.
Leuven, Belgium
Coordinates the SPINS semiconductor spin-qubit pilot line under the European Chips Act, with TNO and partners. The brief’s point: Belgium’s quantum weight is this manufacturing platform, not a dense startup scene.
Munich / Villach / Dresden, Germany
Industrial fabrication of ion-trap QPUs and related semiconductor processes. Partnerships include a historical Min-Ion effort with Oxford Ionics, and work with eleQtron. Not a standalone quantum-cloud brand.
Hillsboro, OR / Santa Clara, CA, United States
Reported Tunnel Falls 12-qubit test chip
Silicon-spin test chips, including Tunnel Falls, with research alongside Argonne and others. Not a commercial full-stack product line as of 2026.
Oxford, United Kingdom
Trapped ions on semiconductor chips (electronic qubit control). IonQ’s acquisition, about $1.075 billion, is described as the largest UK quantum exit. The team remains an IonQ chip-development centre, with an NQCC testbed.
Coquitlam, BC, Canada
Silicon T-centre spin qubits with telecom-wavelength photon networking. A CAD $180 million first close was reported, with Microsoft, BCI, and UK government backers cited. CQCP and DARPA QBI Stage B.
London, United Kingdom
Silicon-spin qubits in CMOS. About $160 million / £120 million Series C in May 2026. An NQCC silicon machine in 2025, DARPA QBI Stage B, and a Maryland lab planned.
Grenoble, France
Silicon-spin qubits in PROQCIMA. STMicroelectronics 300 mm wafers at Crolles reached a milestone in December 2025. MoUs with TNO and OrangeQS in 2026. Singapore’s NQO lists Quobly among international partners.
Sydney, Australia
Company-asserted Two-qubit fidelities up to 99.99% claimed (Dec 2025)
Phosphorus-in-silicon donor qubits made with atomic-precision STM manufacturing. DARPA QBI Stage B. NRFC equity of A$20 million (24 March 2026) plus A$40 million (11 June 2026). Founding consortium included the Commonwealth, NSW, UNSW, Telstra, and CBA. Aggregate “$200 million+” totals in directories are unverified. An ASCA defence contract covers a sovereign quantum-enhanced machine-learning processor.