Shunkai becomes operational as Japan’s first full-stack neutral-atom quantum computer

Infleqtion and Japan’s Moonshot programme said Shunkai is operational with about 50 neutral-atom qubits, with a planned path to roughly 500 and a later research goal of up to 10,000 physical qubits with error correction. External access is planned.

Why it matters: A domestic full-stack system gives Japanese researchers a platform for hardware, control and algorithm development.

Business/technical/strategic impact: Operation is confirmed by the company and research institute, but no independent performance assessment or quantum-advantage result was identified. Scaling targets remain research goals.