Quantum Motion raises $160M to scale silicon-based quantum computing

Quantum Motion has raised $160 million in a Series C funding round, as it pushes to bring commercially viable quantum computers to market using the same silicon transistor technology found in everyday smartphones and laptops.

The round was led by DCVC and Kembara, with participation from new investors Firgun and British Business Bank, alongside existing investors. The company says the funding will help it commercialise an approach to quantum computing that it claims is dramatically cheaper, smaller, and more energy-efficient than rival technologies, which can fit inside existing standard data centres and racks.

The announcement comes as governments and technology companies pour billions into next-generation computing infrastructure, with AI data centres already straining power grids worldwide. Conventional approaches to quantum computing are expected to require industrial-scale facilities and power consumption running into multiple megawatts – a trajectory Quantum Motion is betting against.

The London-based company argues its silicon-based systems can deliver utility-scale quantum computing at a hundredth of the cost and space, and a thousandth of the energy, of competing architectures – and crucially, inside standard data centre racks rather than bespoke facilities.

Since its last funding round in 2023, Quantum Motion has opened offices and labs in Spain and Australia, and deepened a manufacturing partnership with GlobalFoundries, tying its development roadmap into existing commercial chip supply chains. Last year, it delivered what it describes as the world’s first commercial deployment of a full-stack silicon CMOS quantum computer at the UK National Quantum Computing Centre, and has progressed to Stage B of DARPA’s Quantum Benchmarking Initiative in the United States.

“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,” said Dr. James Palles-Dimmock, CEO of Quantum Motion.

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Quantum Motion co-founders Dr. John Morton (CTO) and Dr. Simon Benjamin (CSO) said: “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.”