Free tools Windows power users keep installed
One-click scans. No signup required.
Quantum Motion says it has built the first full-stack quantum computer made using standard silicon CMOS fabrication. The system was installed at the UK National Quantum Computing Centre (NQCC) in 2025 for testing. The claim is about how the machine is built and integrated—not that it is the first quantum computer, has achieved quantum advantage, or is already fault-tolerant.
What does “world’s first” mean here?
Quantum Motion announced the system on 15 September 2025, describing it as the industry’s first full-stack quantum computer built with standard silicon CMOS fabrication. Read “first” narrowly: the company is claiming a milestone in combining a silicon quantum processor, control electronics, and supporting system components using a manufacturing approach compatible with standard CMOS processes. It is not claiming to have invented quantum computing or to be the first company to build a working quantum computer.
“Standard CMOS” refers to the established manufacturing technology used to make conventional chips. Quantum Motion says its quantum chips use 300 mm wafers and commercial foundry processes. That makes the manufacturing route notable, but it does not by itself establish the machine’s computational performance.
What is included in the full-stack system?
A full-stack quantum computer brings together the quantum processing unit (QPU), the electronics that control and read it, and the software and interface needed to run workloads. Quantum Motion says its software stack is compatible with frameworks including Qiskit and Cirq. The installed system includes a silicon QPU, integrated control electronics, and a dilution refrigerator, in a stated footprint of three standard 19-inch racks.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minute#1 Best Overall
| Part of the system | What Quantum Motion says is included | What that establishes |
|---|---|---|
| Quantum processor | Silicon quantum-dot spin qubits in a CMOS-compatible architecture | The qubit type and broad architecture; a total qubit count was not disclosed in Tom’s Hardware’s September 2025 report. |
| Control and readout | Integrated electronics for operating and measuring the qubits | Control electronics are part of the delivered system; public performance metrics for the deployed machine were not provided in that report. |
| Cooling and enclosure | A dilution refrigerator and electronics in three standard 19-inch racks | The company’s stated physical footprint, not a claim that the system runs at room temperature. |
| Software | Compatibility with Qiskit and Cirq | Claimed framework compatibility, not evidence that every existing program can run unchanged or efficiently. |
How does the silicon architecture work?
Spin qubits in quantum dots
The processor uses silicon quantum-dot spin qubits. In this approach, quantum information is associated with the spin of electrons confined in tiny regions of silicon. The use of silicon links the design to a mature semiconductor manufacturing ecosystem, though operating a quantum processor still requires specialized devices, control, and deep cryogenic cooling.
Repeated four-qubit tiles
Quantum Motion describes a scalable, tileable four-qubit unit cell with integrated compute, readout, and control elements. Repeating a unit-cell design is the company’s proposed path to larger processors. Its stated objective is to reach millions of qubits on a QPU using repeated tiles and commercial foundry processes. That is a scaling goal, not a demonstrated qubit count or proof that a million-qubit machine has been built.
Rank #2
Why use standard CMOS manufacturing?
CMOS is the dominant process for manufacturing conventional processors. Quantum Motion’s argument is that established 300 mm wafer fabrication and semiconductor supply chains could support repeatable, higher-volume production of quantum devices. Integrating cryogenic control electronics near the qubits is another part of its approach: the company says this can bring classical control closer to the processor at very low temperatures.
These are potential manufacturing and integration advantages. They do not, on their own, show that the system has lower error rates, solves useful problems faster, or costs less in practice than other quantum-computing approaches. Quantum Motion has also cited the potential for a 100-fold cost reduction and 1,000-fold lower energy use in 2026; those are company claims, and the public material summarized here does not establish their comparison basis or independently validate them.
Where is the computer, and what is it being tested for?
The system was installed at the NQCC in Oxfordshire under the centre’s Quantum Computing Testbed Programme. The NQCC is evaluating hardware platforms from different companies. At the time of the September 2025 Tom’s Hardware report, testing and validation of Quantum Motion’s system were still pending. NQCC Director Michael Cuthbert said the centre was preparing to test and validate it and assess how real-world applications map onto the silicon architecture.
Installation at a national testbed is a deployment milestone, not a public-access announcement or a demonstration of commercial utility. The available evidence does not establish that customers can use the machine on demand.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How much performance has Quantum Motion disclosed?
Tom’s Hardware reported in September 2025 that Quantum Motion had not disclosed the deployed system’s qubit count, gate fidelities, coherence times, early benchmarks, or evidence of error-mitigation performance. Those details are essential for judging the processor’s present capability and comparing it fairly with other quantum systems.
Accordingly, the delivery should not be described as proof of fault tolerance, quantum advantage, or superior performance. The four-qubit figure describes the company’s unit-cell design; it is not a disclosed total count for the installed QPU. The million-qubit figure is a company scaling objective, not the size of this machine.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Best Value
Who is Quantum Motion?
Quantum Motion was founded in 2017 by Professor John Morton of UCL and Professor Simon Benjamin of Oxford University. UCL reported that the company had more than 100 employees and had raised more than £62 million in equity and grant funding as of September 2025. In May 2026, Quantum Motion announced a $160 million Series C co-led by DCVC and Kembara. These company and funding milestones provide context for the effort behind the hardware; they do not independently verify its technical performance.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
