October 2025
Japan Showcases Its Technological Prowess with Fully Domestically Produced Quantum Computer
Oct 09, 2025

Japan's fully domestically produced quantum computer
Quantum computers, capable of performing calculations on a scale far beyond that of conventional computers, are expected to revolutionize society. Japan's technological expertise in this cutting-edge field is attracting significant attention. The Japanese government has designated 2025 as the launch year of quantum industrialization to promote its practical application.
In July, a group led by The University of Osaka—comprising SMEs, startups, and research institutes—successfully launched the operation of a fully domestically developed superconducting quantum computer. All of its key components, including both hardware and software, were designed and built in Japan. In August, a hands-on exhibit at Expo 2025 Osaka, Kansai, Japan allowed visitors to remotely operate the domestically produced quantum computer via tablets at the venue, drawing a large number of attendees from both Japan and overseas.
Professor Makoto Negoro of the Center for Quantum Information and Quantum Biology, The University of Osaka remarked, "We have demonstrated that Japan can create a fully domestically produced quantum computer with high performance. Moving forward we aim to collaborate with global partners to position Japan at the forefront of this field worldwide."

Right: Professor Makoto Negoro, Center for Quantum Information and Quantum Biology, The University of Osaka
Left: Mr. Masamichi Saitoh, Manager of Dilution Refrigerator Part, Engineering Team, ULVAC CRYOGENICS INC.

Expo 2025 Osaka, Kansai, Japan
Quantum computers utilize laws of quantum mechanics that govern the microscopic world to perform calculations. The superconducting quantum computer developed by the group adopts a design in which the chips are cooled to near absolute zero (-273.15°C), where electrical resistance disappears. In addition to domestically-produced chips, controllers, and software, the group also succeeded in manufacturing the device that continuously creates the ultralow-temperature environment—the dilution refrigerator—within Japan for the first time.
The dilution refrigerator was developed by ULVAC CRYOGENICS INC., a manufacturer of cryogenic equipment and vacuum pumps. Mr. Masamichi Saitoh, Manager of Dilution Refrigerator Part, Engineering Team, commented, "Cooling technology is a critical aspect for controlling quantum computers, and we're proud to have contributed to the development. As we move closer to practical application, we'll continue to work as a key player in the field, striving to expand the market for these essential components."

Professor Negoro (right) and Mr. Saitoh (left) talking near the quantum computer-themed artworks displayed at Expo 2025
As the practical application of quantum computers advances, their use is expected to extend to a wide range of fields, including material development, drug discovery, and artificial intelligence (AI). Professor Negoro expressed his enthusiasm, saying, "Applications could include unravelling the mechanisms of photosynthesis and creating artificial photosynthesis. Our goal is to solve mysteries in life sciences through quantum computers."
Quantum computer development is fiercely competitive on a global scale. Professor Negoro highlighted Japan's strengths, including its advanced technological capabilities, its robust collaboration between government, industry, and academia—exemplified by initiatives such as the Moonshot Research and Development Program—and its collaborative development approach, where various companies and institutions contribute their specialized expertise. Japan, with its expertise, data, and technologies across various industrial layers, offers a testbed for overseas companies to evaluate and compare their technologies.

Professor Negoro explaining quantum computers to visitors at Expo 2025
"Our journey toward practical and commercial applications of quantum computers has only just begun. We aim to strengthen partnerships, on a technological level, with companies—both in Japan and internationally—that share our vision," Professor Negoro concluded.
Explore More
-
Why Japan
A world-class business environment, Japan provides fertile ground for innovation, and endless possibilities for business expansion. That’ s why global business leaders have chosen to invest here. Work with JETRO to map out a path to success and launch your business in the Japanese market.
-
Attractive Sectors
We introduce Japan's attractive sectors. Learn about each sector's general overview and trends, government initiatives, and alluring markets for foreign companies.
JETRO supports your business in Japan

We provide consistent one-stop service for establishing a base or expanding business in Japan. See the details of support services that JETRO provides when setting up business in Japan.
Contact Us
Investing in and collaborating with Japan
We will do our very best to support your business expansion into and within Japan as well as business collaboration with Japanese companies. Please feel free to contact us via the form below for any inquiries.
Inquiry FormJETRO Worldwide
Our network covers over 50 countries worldwide. You can contact us at one of our local offices near you for consultation.
Worldwide Offices