In a landmark achievement for quantum technology, Japan has unveiled a powerful new quantum computer that quadruples its previous capabilities. Developed through a collaboration between tech giant Fujitsu and leading research institute RIKEN, the new 256-qubit superconducting quantum computer marks a decisive step forward in the global race for quantum supremacy.
The facility in Wako at the RIKEN RQC-Fujitsu Collaboration Centre uses a new high-density 3D design, a better cooling system, and improved qubit capability to maintain stability. The new machine has substantially enhanced research capabilities with a processing power four times that of its predecessor, which was introduced in 2023.
This development is supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) through the Q-LEAP Flagship Program. This program is designed to advance quantum computing capabilities towards practical applications in molecular simulations, error correction research, financial modelling, and pharmaceutical discovery.
Scientists have effectively maintained the extreme low temperatures that are essential for the preservation of qubit stability. Although the qubit density increased by four times as a result of progressive thermal engineering and enhanced control system optimisation, the system continues to operate in the same dilution refrigerator as its antecedent.
Global Access Coming 2025
Fujitsu and RIKEN collaborated to incorporate the 256-qubit machine into their hybrid quantum computing platform, which combines quantum computing with conventional computation. The platform will be globally accessible from the early start of Japan’s fiscal year 2025, providing a wide range of computational solutions to commercial companies and research institutions worldwide.
According to the organisation, the introduction of a new quantum computing system is merely the initial phase of innovative advancements. Fujitsu Technology Park will host the installation of a 1,000-qubit quantum computer in 2026. The agreement between Fujitsu and RIKEN for the development of superconducting quantum technology will persist until 2029.
In a joint statement, the organisations emphasised the strategic importance of the project: “This announcement marks another crucial step toward the practical application of superconducting quantum computers and unlocking their potential to grapple with some of the world’s most complex challenges.”
As quantum computing edges closer to practical deployment, Japan’s latest advancement signals its strong commitment to maintaining a leading role on the global quantum stage.