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The Quantum Insider
Japan’s Full-Stack Neutral-Atom Quantum Computer is Operational
Japan has officially begun operating Shunkai, the country's first full-stack neutral-atom quantum computer, integrating both hardware and software developed in partnership with Hitachi and Infleqtion. The initial system operates with about 50 qubits and is part of a broader effort under the Moonshot R&D Program to contribute to quantum computing advancements, specifically in error correction and scalability. Future ambitions include a significant scale-up to 10,000 qubits designed for external research use by 2031, potentially revolutionizing applications across multiple fields.
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Published 24 Aug 2026, 09:05 UTC4 min read
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Summary
TL;DR
- Shunkai is Japan's first full-stack neutral-atom quantum computer.
- Development supported by Hitachi and Infleqtion.
- Initial deployment uses approximately 50 physical qubits.
- Aims to scale up to 10,000 qubits by 2031.
- Focus on quantum error detection and correction capabilities.
Interesting facts
- Neutral-atom quantum computing offers room-temperature operation without refrigeration requirements.
- The system allows quantum entanglement between arbitrary qubits through physical movement.
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