Fujitsu Fabricates Diamond-Spin QPU Prototype Integrating Tin-Vacancy Centers and Photonic ICs
AI-summarised brief · reviewed before publication
Fujitsu Limited announced a breakthrough in solid‑state quantum computing by fabricating a diamond‑spin quantum processing unit (QPU) that embeds tin‑vacancy (SnV) color centers directly into photonic integrated circuits. The prototype, developed with QuTech and the University of Tokyo, operates at 1.55 K—much warmer than the millikelvin temperatures required for superconducting qubits—and is accessible via Fujitsu’s Hybrid Quantum Computing Platform. The chip uses heterogeneous bonding and nanometer‑scale diamond thinning to integrate SnV centers with alumina waveguides, offering high photon brightness and reduced electric‑field noise. Fujitsu plans a multi‑module diamond‑spin system by 2027, targeting 250 logical qubits by FY2030 and 1,000 by FY2035, while exploring optical links to its superconducting hardware.
💡 Why It Matters
- · The warmer operating temperature and superior photon output of SnV centers could lower cooling costs and improve scalability, positioning Fujitsu as a contender in the emerging heterogeneous quantum‑computing market.
