Quantum Motion delivers full stack silicon CMOS Quantum Computer to NQCC

James PallesDimmock from Quantum Motion announced the delivery of the industry’s first full‑stack silicon CMOS quantum computer, built on a 300‑mm wafer process that integrates a quantum processing unit, cryogenic control electronics and a dilution refrigerator into a footprint of just three 19‑inch racks. The system, installed at the UK National Quantum Computing Centre, combines the company’s Quantum Processing Unit with a user interface and control stack compatible with Qiskit and Cirq, thereby offering a complete, data‑centre‑friendly solution that can be upgraded to larger processors without altering its physical envelope. This milestone demonstrates that a robust, functional quantum computer can be mass‑produced using the same transistor technology that underpins conventional silicon chips.

Quantum Motion delivers first full stack silicon CMOS quantum computer at UK National Quantum Computing Centre

Quantum Motion announced on 15 September 2025 that it had installed the industry’s first full‑stack silicon CMOS quantum computer at the UK National Quantum Computing Centre (NQCC) in London. The system, built on a standard 300 mm silicon CMOS wafer process, is the first silicon spin‑qubit computer to be deployed under the NQCC’s Quantum Computing Testbed Programme. It represents a milestone for silicon‑based quantum technology, demonstrating that a robust, functional quantum computer can be produced using the same transistor technology that underpins today’s conventional microprocessors.

The quantum processor, known as the Quantum Processing Unit (QPU), is integrated with a user interface and control stack that is compatible with leading industry software frameworks such as Qiskit and Cirq. This full‑stack solution includes a dilution refrigerator and cryogenic control electronics housed within a data‑centre‑friendly footprint of just three 19‑inch server racks. Auxiliary equipment is designed to sit separately, allowing the system to fit into standard data‑centre environments and to be upgraded to larger QPUs without altering the overall footprint. The modularity of the design means that future generations of the QPU can be installed in the same rack space, supporting the scaling of the platform to millions of qubits.

Quantum Motion’s architecture relies on a scalable tile design that incorporates all compute, readout and control elements into a dense array that can be repeatedly printed onto a chip. This tile approach enables the system to be expanded to millions of qubits per QPU, a scale that is essential for fault‑tolerant, utility‑scale quantum computing. The company has also introduced AI‑driven machine‑learning tuning, which automates calibration and control algorithms, improving operational efficiency and reducing the time required to optimise the device.

James PallesDimmock, CEO of Quantum Motion, highlighted the significance of the delivery, stating that the system “demonstrates you can build a robust, functional quantum computer using the world’s most scalable technology, with the ability to be mass‑produced.” Dr Michael Cuthbert, Director of the NQCC, added that the installation “marks an important step forward in the NQCC’s quantum computing testbeds initiative” and that the centre is eager to test and validate the silicon architecture in real‑world applications.

The UK Science Minister, Lord Vallance, noted that the NQCC provides a unique space for innovators to trial new quantum technologies and that the new silicon CMOS quantum computer brings the technology closer to commercial viability, potentially accelerating advances in drug discovery and clean‑energy optimisation. Quantum Motion’s approach leverages high‑volume industrial chipmaking, using industry‑standard 300 mm processes from commercial foundries. The company’s cryoelectronics, which integrate qubits with classical control circuits capable of operating at deep cryogenic temperatures, enable extreme scaling of quantum processors. With the delivery of this system, Quantum Motion is on track to bring commercially useful quantum computers to market this decade, according to President and CCO Hugo Saleh. The company’s participation in the SiQEC silicon quantum error‑correction project and its active role in DARPA’s Quantum Business Incubator further underscore its commitment to fault‑tolerant silicon‑based quantum computing.

Mass manufacturable 300mm wafer technology enables scalable millions of qubits and fault tolerant architecture

Quantum Motion announced on 15 September 2025 that it had installed the world’s first full‑stack silicon CMOS quantum computer at the National Quantum Computing Centre (NQCC) in London. The processor is fabricated on a 300‑mm silicon wafer, the same size used for high‑volume production of conventional microchips, and represents the first silicon spin‑qubit system to be deployed under the NQCC’s Testbed Programme.

The choice of a 300‑mm CMOS process is pivotal. By leveraging the same transistor technology that underpins today’s laptops, servers and smartphones, the company can tap existing semiconductor supply chains, dramatically reducing the cost per qubit and enabling large‑scale production. The fabrication is carried out in commercial foundries that routinely produce billions of standard chips each year, a stark contrast to the bespoke, low‑throughput processes that have dominated earlier quantum‑hardware efforts.

Central to the design is a tile‑based architecture that embeds compute, readout and control circuitry into a compact, repeatable block. Each tile can be printed across the wafer, allowing the processor to be scaled by simply adding more tiles. Quantum Motion’s roadmap envisions future generations of the QPU that host millions of qubits, a scale that is essential for fault‑tolerant operation and for tackling problems that exceed the reach of classical supercomputers.

Fault tolerance is addressed through the integration of cryogenic electronics that operate at millikelvin temperatures. These on‑chip control circuits minimise latency and power dissipation, both of which are critical for maintaining coherence across a large qubit array. The system is also designed to accommodate silicon quantum error‑correction codes, a capability that aligns with the objectives of the SiQEC project and positions the platform for utility‑scale quantum computing.

As Quantum Motion CEO James PallesDimmock noted, the deployment confirms that a silicon CMOS quantum computer can be produced using industry‑grade fabrication and that it can be scaled to millions of qubits while remaining compatible with existing data‑centre infrastructure. The achievement marks a decisive step toward commercial quantum processors that could accelerate breakthroughs in chemistry, materials science, and artificial intelligence.

Integration with Qiskit Cirq and data centre friendly footprint paves way for commercial deployment

Quantum Motion’s announcement on 15 September 2025 highlighted that its silicon CMOS quantum computer is the first full‑stack system to expose a control and user interface that is directly compatible with the industry‑standard quantum‑software frameworks Qiskit and Cirq. The company’s control stack, embedded within the QPU’s cryogenic electronics, translates high‑level circuit descriptions from these frameworks into precise microwave pulse sequences and measurement protocols that drive the silicon spin‑qubits. As James PallesDimmock, CEO of Quantum Motion, noted, this compatibility removes a major software barrier, allowing developers to port existing quantum algorithms without bespoke hardware‑specific tooling.

The hardware footprint of the system is deliberately data‑centre‑friendly. The entire quantum processor, dilution refrigerator and integrated control electronics are housed in just three 19‑inch racks, a size that fits comfortably into standard data‑centre racks. Auxiliary equipment—such as power supplies and cryogenic plumbing—is mounted separately, so the core quantum stack occupies a fixed, minimal space. This modular design means that future upgrades to larger QPUs can be implemented without expanding the rack footprint, a feature that will ease scaling within existing data‑centre infrastructure.

By marrying a fully integrated silicon CMOS processor with a software stack that speaks the same language as Qiskit and Cirq, and by delivering a compact, upgrade‑friendly footprint, Quantum Motion has created a platform that can be deployed in commercial data‑centres with minimal disruption. The result is a quantum computer that not only leverages the mass‑manufacturability of 300‑mm CMOS wafers but also aligns with the operational realities of today’s cloud‑based computing environments, thereby paving the way for broader commercial adoption.