Quantum Motion
UK developer of quantum computers built on standard silicon CMOS chips. It installed a full-stack system at the National Quantum Computing Centre in 2025 and raised a USD 160 million Series C in 2026.
Industry: Silicon quantum computing | Location: United Kingdom | Total Funding: USD 160M
About Quantum Motion
Quantum Motion is a UK quantum computing company that builds quantum computers on silicon, using standard CMOS chip fabrication and spin qubits. Its systems are designed to fit in standard data-centre racks, and the company claims large reductions in cost, space and energy use compared with other approaches.
Octopus Ventures wrote in May 2020 that the company was formed to commercialise silicon spin technology and architectures developed at University College London and the University of Oxford. It named Professor Simon Benjamin of Oxford, Professor John Morton of UCL and Dr James Palles-Dimmock, then commercial director, as founders. In 2026 coverage Palles-Dimmock is chief executive, Morton is co-founder and chief technology officer, and Benjamin is co-founder and chief scientific officer.
On 15 September 2025 the company announced what it called the first full-stack silicon CMOS quantum computer, installed at the UK's National Quantum Computing Centre under its testbed programme. The system uses a silicon spin-qubit processor made with 300mm CMOS fabrication, a control stack compatible with Qiskit and Cirq, and three 19-inch racks that hold the dilution refrigerator and control electronics. The company has also been awarded the UKRI SiQEC project on silicon quantum error correction and is a performer in the DARPA Quantum Benchmarking Initiative, reaching Stage B.
Octopus Ventures made its first quantum computing investment in the company in May 2020, alongside INKEF Capital and the National Security Strategic Investment Fund; the amount was not disclosed. On 7 May 2026 the company announced a 160 million dollar Series C co-led by DCVC and Kembara. British Business Bank and Firgun joined as new investors, and Oxford Science Enterprises, Inkef, Bosch Ventures, Porsche Automobil Holding SE and Parkwalk Advisors returned.
On 3 September 2026 the company announced a second close of the Series C, with Imec.ventures, Lansdowne Partners, Sony Innovation Fund, S3 Ventures and Inkef participating; the size was not disclosed. It said the money would support custom silicon co-development, international expansion including a new laboratory in Maryland in the United States, and wider manufacturing and data-centre integration.
Leadership
- James Palles-Dimmock, Chief Executive Officer
- John Morton, Co-founder and Chief Technology Officer
- Simon Benjamin, Co-founder and Chief Scientific Officer
- Hugo Saleh, President and Chief Commercial Officer