QuTech

Kawasaki, Japan – September 11, 2026 -- Fujitsu has developed the world's first working prototype of a diamond-spin quantum computer that integrates tin-vacancy (SnV) centers into photonic integrated circuits, a milestone the company says advances the path toward scalable quantum systems.

Prototype runs at -271.6°C, warmer than superconducting rivals

The device operates at -271.6°C, a higher temperature threshold than the -273.13°C required by typical superconducting quantum computers. Fujitsu demonstrated in a test environment that the prototype can be operated via its Hybrid Quantum Computing Platform without requiring specialist quantum expertise, a factor that could lower operational barriers for enterprise adopters.