Japan Unveils First Fully Domestically Built Quantum Computer

• Japan's first fully domestic quantum computer debuted at Osaka University’s QIQB on July 28th.
• The system uses homegrown components and open-source software, showcasing Japan’s technological self-reliance.
• Expo 2025’s interactive exhibit lets visitors explore quantum computing through cloud access and art.

Japanese superconducting quantum computer fully designed and built with domestically developed components and software, was unveiled at The University of Osaka’s Center for Quantum Information and Quantum Biology (QIQB). This milestone underscores Japan's technological leadership in quantum computing, showcasing its ability to create an entirely self-reliant quantum system.

It was a project led by QIQB and RIKEN where it was collaborated reliably with the Japanese companies ULVAC Inc., ULVAC CRYOGENICS INC., e-trees, Japan, Inc., QuEL, Inc., QunaSys Inc., Systems Engineering Consultants Co., LTD., TIS Inc., and Fujitsu Limited.

The quantum computer replaces imported components, such as dilution and pulse tube refrigerators, with homegrown alternatives. Its software ecosystem, built on the open-source Open Quantum Tool chain for OPerators & USers (OQTOPUS), is entirely Japanese-developed, covering front-end to back-end operations. This achievement highlights Japan's mastery of quantum technology manufacturing and integration, positioning it as a global leader in the field.

Quantum computers offer the possibility of revolutionary applications, including in the design of new materials and medicines, management of complex systems, and machine learning, and could benefit people globally, including in combating climate change. Osaka, Kansai, Japan, which will be a venue of the Expo 2025, allows visitors to learn about this innovation from the 14th to the 20th of August, 2025.

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The display offers cloud-based access to the quantum computer, allowing attendees to run simple quantum programs. Designed for all audiences, the exhibit includes interactive features on quantum entanglement and showcases quantum-generated art in collaboration with Professor Akihiro Kubota of Tama Art University.

This exhibit aims to demystify quantum technology, blending science and art to inspire future innovators. By offering hands-on engagement, it highlights the potential of quantum computing to revolutionize industries and everyday life, solidifying Japan’s role in shaping the future of this transformative field.