Japan has activated its first full-stack neutral-atom quantum computer, Shunkai, marking a milestone in domestic quantum computing capability.

In the near future, Shunkai is expected to be opened to external users beyond the internal team, expanding access to researchers and developers.

Shunkai operates at room temperature, a notable practical edge over some cryogenic quantum systems.

The project aims to scale the system to roughly 10,000 qubits by March 2031, signaling an ambitious growth trajectory.

Shunkai integrates software, control, and hardware to read inputs and return results, pursuing functionality closer to conventional computers.

The breakthrough strengthens Japan’s quantum computing landscape and boosts its international competitiveness in the field.