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# Japan’s Full-Stack Neutral-Atom Quantum Computer Is Operational

**[The Quantum Insider](https://daily.dev/sources/thequantuminsider)** · 5 min read · 0 upvotes · 0 comments

## Summary

Japan's Institute for Molecular Science has launched Shunkai, the country's first full-stack neutral-atom quantum computer, developed with Hitachi and Infleqtion under the Moonshot R&D Program. The system starts with about 50 qubits and is planned to scale to roughly 500, with a longer-term goal of 10,000 physical qubits and quantum error detection and correction by March 2031. It will be partially opened to external researchers for application development and error-correction work.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://thequantuminsider.com/2026/08/24/japans-full-stack-neutral-atom-quantum-computer-is-operational>

## Questions this post answers

### What is Japan's first full-stack neutral-atom quantum computer and how many qubits does it have?

Japan's first full-stack neutral-atom quantum computer is called Shunkai, built by the Institute for Molecular Science with Hitachi and Infleqtion under the Moonshot R&D Program. It began operating with about 50 qubits and is planned to scale to roughly 500 qubits, with a longer-term goal of 10,000 physical qubits and quantum error correction by March 2031.

_Track emerging quantum computing hardware milestones like this one on daily.dev._

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---

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