Quantum Motion
UK silicon-spin quantum-computing scale-up building qubits on standard 300 mm CMOS wafers through commercial foundry partnerships (GlobalFoundries). Spun out of UCL and Oxford in 2017; differentiator is full-stack co-design of the silicon QPU with cryogenic control electronics, targeting "quantum in a box, not a building" — a data-centre-friendly footprint of a few 19-inch server racks rather than warehouse-scale cryogenic plant. Sells research-access systems via the UK National Quantum Computing Centre testbed; commercial deployment is the Series-C ($160M, May 2026) milestone.
Timeline
Current flagship
NQCC silicon-CMOS testbed system — silicon-spin (300 mm CMOS QPU, integrated cryo-control, three-rack footprint)
Milestones
- 2026-05$160M Series C co-led by DCVC and Kembara; total raised passes ~$220M
- 2025-09What the company describes as the first full-stack silicon-CMOS quantum computer, delivered to the UK NQCC under the Quantum Computing Testbed Programme — 300 mm CMOS QPU, integrated cryogenic control stack, three-rack 19" footprint, Qiskit/Cirq front-end
- 2025-07384-quantum-dot silicon array with on-chip cryo-electronics demonstrated (arXiv preprint)
- 2025Radiofrequency electron-cascade dispersive readout of a silicon-MOS spin qubit, 7.6 µs minimum integration time, >35 dB SNR enhancement (Nature Electronics)
- 2025Advanced to Stage B of DARPA's Quantum Benchmarking Initiative
- 2023-02£42M Series A led by Bosch Ventures with Porsche SE and British Patient Capital; existing investors Oxford Science Enterprises, Inkef, Parkwalk, Octopus Ventures, IP Group, NSSIF participated
- 2020-05£8M / €9M seed round (Inkef Capital, Octopus Ventures, Oxford Sciences Innovation, IP Group, Parkwalk)
- 2017Founded as a UCL / Oxford spin-out by John Morton and Simon Benjamin
Roadmap
Capability details
Quantum computing
- Qubit type
- spin-si
- Physical qubits
- —
- Logical qubits
- 0
- 1Q gate fidelity
- —
- 2Q gate fidelity
- —
- T₁
- —
- T₂
- —
- EC code
- —
- Connectivity
- nearest-neighbour
10 unverified fields
-
modalities.qc.physical_qubits_current -
modalities.qc.one_q_fidelity -
modalities.qc.two_q_fidelity -
modalities.qc.coherence_t1_ms -
modalities.qc.coherence_t2_ms -
modalities.qc.ec_code -
modalities.qc.gate_set -
modalities.qc.connectivity— typical of silicon-MOS quantum-dot arrays; not explicitly named in the company's own press materials -
shareholders— private company; lead-investor roles drawn from round press releases, no Companies House cap-table cross-check performed; stake percentages undisclosed across the board -
key_personnel.0.since— Palles-Dimmock was promoted to CEO from COO; exact transition date not confirmed in published sources
People
References
- paper https://www.nature.com/articles/s41928-026-01582-8 Radiofrequency cascade readout of coupled silicon-MOS spin qubits (Nature Electronics, 2026)
- preprint https://arxiv.org/abs/2507.21306 384-quantum-dot silicon array with on-chip cryo-electronics (July 2025)
- press https://quantummotion.com/quantum-motion-delivers-the-industrys-first-full-stack-silicon-cmos-quantum-computer/ NQCC full-stack delivery announcement (September 2025)
- press https://quantummotion.com/quantum-motion-raises-160-million-series-c-to-deliver-quantum-computings-transistor-moment/ $160M Series C announcement (May 2026)