Fujitsu develops diamond-spin quantum computer prototype
The prototype uses light to link modules and could reach 250 logical qubits by fiscal 2030, Fujitsu said.
- On Tuesday, Sept 8, 2026, Fujitsu announced the world's first working diamond-spin quantum computer prototype, incorporating tin-vacancy centers into photonic integrated circuits.
- Engineers selected SnV centers over conventional nitrogen-vacancy centers because their symmetrical structure resists external noise and emits light at roughly 10 times the brightness of NV centers.
- The prototype operates at-456.9 degrees Fahrenheit , which is roughly 2.8 degrees Fahrenheit warmer than superconducting quantum computers, using bonded tin-implanted diamond substrates.
- This prototype results from joint research started in 2020 with Delft University and QuTech; General Director Kees Eijkel, QuTech, Delft University of Technology, said "We are delighted to announce this prototype."
- Fujitsu plans to create a multi-module diamond-spin prototype by 2027, aiming to develop a 250-logical-qubit system by fiscal 2030 and a 1,000-logical-qubit system by fiscal 2035.
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Fujitsu developed a functional quantum computer prototype that uses microscopic defects in diamonds such as qubits and photonic circuits to connect them by light. The Japanese company believes that this architecture could facilitate the construction of large-scale modular quantum systems and expects to reach 250 logical qubits by 2030 and 1,000 by 2035.
Fujitsu Fabricates Diamond-Spin QPU Prototype Integrating Tin-Vacancy Centers and Photonic ICs
https://youtu.be/bba0OTdM0Yc Japanese IT group Fujitsu Limited has announced a physical hardware milestone in solid-state quantum architectures, fabricating a working prototype diamond-spin quantum processing unit (QPU) that integrates tin-vacancy (SnV) color centers directly into photonic integrated circuits (PICs). Developed in collaboration with QuTech (TU Delft) and the University of Tokyo, the platform operates at a cryogenic [...]
Science and Haitek: The Japanese company Fujitsu announced the creation of the world's first working prototype quantum computer, which uses back-to-back cubes in a diamond based on the Elo-Vacansia centres.
Fujitsu develops diamond-spin quantum computer prototype - CanadianSME Small Business Magazine
New diamond-spin quantum computer prototype incorporating tin-vacancy (SnV) centers into photonic integrated circuits marks significant step toward quantum computing scalability Fujitsu today announced that it has developed the world's first working prototype of a diamond-spin quantum computer incorporating tin-vacancy (SnV) centers into photonic integrated circuits. The prototype can be operated at -271.6°C, higher than the
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