The German startup SaxonQ has developed a quantum computer that operates at room temperature.
Unlike traditional quantum computing setups, the device does not require freezing laboratories or large-scale cooling machinery.
How it fits in a rack, not a warehouse
The system fits inside a standard server rack and connects directly to a normal AC power outlet, rather than requiring a dedicated facility.
That marks a significant departure from most quantum computers, which typically need superconducting chips cooled to near absolute zero inside room-sized refrigeration units.
The diamond trick behind it
The core technology involves removing a single carbon atom from a synthetic diamond and replacing it with a nitrogen atom, creating a defect known as a nitrogen-vacancy centre that can store and process quantum information.
SaxonQ's breakthrough was adding sulfur atoms during that process, which significantly raises the proportion of implants that become functional qubits.
Traditional methods typically achieve success rates of only 1% to 10%, whereas the company says its sulfur co-implantation technique pushes that figure above 85%.
How accurate it actually is
SaxonQ says the resulting qubits achieve gate fidelity of up to 99.92%, meaning fewer than one error in every thousand operations.
The company describes that accuracy as comparable to lab-scale systems from rivals such as IBM, while its own hardware fits into a fraction of the space.
Early customers and what comes next
SaxonQ's systems are already deployed at research institutions including the German Aerospace Centre and the Fraunhofer Institute for Machine Tools and Forming Technology, where they are used for industrial optimisation and robotics work.
The company's current 128-qubit system is available to order now, with a larger 512-qubit version due in 2027, and a longer-term roadmap that aims to exceed 10,000 qubits beyond 2030.
Visual documentation of the technology shows a small, square microchip with a transparent casing, intricate internal circuitry and a central logo marked with an "S".
Whether the accuracy holds up as the system scales toward those higher qubit counts remains an open question, since detailed figures on multi-qubit and cross-core performance have not yet been published.
