Fujitsu Fabricates Diamond-Spin QPU Prototype Integrating Tin-Vacancy Centers and Photonic ICs - Quantum Computing Report

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Fujitsu Fabricates Diamond-Spin QPU Prototype Integrating Tin-Vacancy Centers and Photonic ICs

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 temperature of -271.6°C (1.55 Kelvin)—substantially warmer than the ~15 millikelvin regime required by superconducting processors—and has been deployed for remote cloud access through the Fujitsu Hybrid Quantum Computing Platform.