Quantum Motion, a silicon transistor-based quantum computing startup, has raised £120 million in a Series C round led by DCVC and Kembara, with participation from the British Business Bank and Firgun. Based in London, Quantum Motion is developing quantum computers using the same silicon technology found in conventional chips, with systems designed to fit inside standard data centre racks.
Built on silicon transistor architecture, Quantum Motion’s approach aims to reduce cost, space and energy requirements compared to other quantum computing methods. Systems developed using this model deliver a 100-fold reduction in cost and space requirements and a 1,000-fold reduction in energy consumption, while avoiding the need for bespoke facilities and high energy infrastructure.
As demand grows for high performance computing and AI systems, the industry is facing increasing pressure on power and infrastructure. Other quantum computing approaches are expected to require industrial-scale facilities with multi-megawatt power consumption, while Quantum Motion is focused on delivering systems that can be deployed within existing data centres.
Since its last funding round in 2023, expansion has included new offices and labs in Spain and Australia, alongside a deeper manufacturing partnership with GlobalFoundries. Progress has also included the commercial deployment of a full-stack silicon CMOS quantum computer at the UK National Quantum Computing Centre in 2025 and advancement to Stage B of DARPA’s Quantum Benchmarking Initiative.
Today’s announcement reflects the strength of the team we have built and the progress they have delivered. Quantum computing will only achieve its full potential if it can be built on a platform that scales, and we believe silicon is the strongest route to achieving that. We are pleased to be joined by investors who share our vision and understand what it takes to build a foundational company in this field.
As founders we were inspired by the breathtaking accomplishments of silicon technology, with city-like complexity delivered on centimetre scale chips. Now, Quantum Motion’s chips can be used not only for bits but also for qubits, unlocking a future in which quantum computers are both fast and ubiquitous.
Quantum is critical infrastructure for the next century of computing, AI, and security, and leadership will go to whoever can industrialise it. DCVC led this investment in Quantum Motion because silicon is the foundation that scales, and this team is building on the CMOS advantage to turn quantum from a demonstration into a commercial success story.
If you believe quantum computing is going to be world-changing, as we do, then the obvious next question is which of the many ways of building one will actually work at scale? This investment signals our strong belief in where the answer lies.
