First Full-Stack Neutral-Atom Quantum Computer Debuts with 50 Qubits
Researchers say the system runs at room temperature and can perform basic calculations without a cooling system.
- On Tuesday, August 25, 2026, the Institute for Molecular Science announced Japan's first full-stack neutral-atom quantum computer, Shunkai, is now operational in Aichi Prefecture.
- Unlike superconducting models, the neutral-atom system operates at room temperature without refrigeration, enabling longer quantum information lifetime and practical scalability advantages.
- Inside Shunkai, atomic qubits are captured using "Optical tweezers" focused by laser light; the system was developed with Hitachi, Ltd. and Infleqtion, Inc.
- The Institute for Molecular Science plans to open Shunkai to external users for error-correction research and application development under the Ohmori Moonshot Project.
- Currently operating with about 50 qubits, the team aims to scale Shunkai to 10,000 physical qubits by March 2031, with Professor Ohmori saying "we want our system to fully replace the existing computing infrastructure.
12 Articles
12 Articles
First full-stack neutral-atom quantum computer debuts with 50 qubits
Japan’s first operational full-stack neutral-atom quantum computer, which packs approximately 50 qubits at launch and could eventually reach 500, has just been switched on. Called Shunkai, the system was designed by a research team led by Kenji Ohmori, PhD, a chemist and a renowned Japanese professor at the Institute for Molecular Science (IMS), part of Japan’s National Institutes of Natural Sciences. The machine officially went live on August 2…
IMS Unveils Japan's First Full-stack Neutral-atom Quantum Computer "Shunkai," Now Operational
OKAZAKI, Japan, Aug. 25, 2026 /PRNewswire/ -- Institute for Molecular Science (hereinafter "IMS"), National Institutes of Natural Sciences, announced on August 24 that Japan's first full-stack neutral-atom quantum computer "Shunkai," developed by a research team led by Professor Kenji Ohmori,…
Japan develops its first neutral-atom quantum computer
Japanese researchers are making headway in the field of quantum computing, or systems that are much faster at solving complex problems than regular computers. The country's first model using what's called "neutral atoms" is now in operation in Aichi Prefecture, central Japan.
Japan Operationalizes First Full-Stack Neutral-Atom Quantum Computer "Shunkai"
The Institute for Molecular Science (IMS), part of Japan's National Institutes of Natural Sciences (NINS), has announced that Japan’s first full-stack neutral-atom quantum computer, named "Shunkai" (春海), is now operational. Led by Project Manager Professor Kenji Ohmori under Goal 6 of the Japanese Cabinet Office / JST Moonshot Research and Development Program, the platform was [...] The post Japan Operationalizes First Full-Stack Neutral-Atom Qu…
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