Tokyo-based quantum software company JIJ said on August 4, 2026 that it has closed an 840 million yen (approximately US$5.2 million) equity financing led by Global Brain. The round pairs Global Brain's flagship GB-VII/GB-VIII growth fund with follow-on cheques from Fujitsu Ventures and three of the firm's corporate venture capital vehicles managed for KDDI, Mitsubishi Electric, ANA Holdings and Yamato Holdings.
Optimization for the hybrid era
Founder and chief executive Yu Yamashiro said the capital will accelerate development of JijZept AI, a cloud-based AI agent service for mathematical optimization that entered beta earlier this year, and expand middleware for gate-based quantum computers. JIJ has already deployed more than 60 production use cases in energy, manufacturing, transportation, telecommunications and logistics. Its open-source Qamomile framework, released as v0.14.0 alongside the round, adds multi-SDK transpilation aimed at hybrid quantum-classical workloads.
New Quantinuum partnership
JIJ has also joined the Quantinuum Startup Partner Program, gaining access to Quantinuum's System Model H hardware and InQuanto software stack to benchmark optimization workloads on trapped-ion devices. The move deepens JIJ's positioning between academic research and enterprise deployment as Japan pushes to commercialise quantum technologies. It follows a spate of Asia-Pacific quantum tie-ups covered by TRM, including the OptQC-NTT alliance and the Fujitsu-Monash-CSIRO partnership.
Building a global footprint
JIJ established JIJ Europe Ltd. in the United Kingdom in 2025, opened JIJ GmbH in Germany in 2026 and began scaling its U.S. operations this year. Global Brain chief executive Yasuhiko Yurimoto said the follow-on investment is a bet that JIJ can become "a leading player in the quantum optimization field" as international demand for planning-and-allocation solvers under complex constraints continues to grow.
Reporting based on coverage from The Quantum Insider, PR Newswire, Global Brain and JIJ Inc.