A Japanese research team from Fukui, Tohoku, Chiba, and Tokyo universities has theoretically proposed a new method to detect Majorana particles using spin currents. Not an observation but a proposal, it opens a fresh window onto the quasiparticle behind topological quantum computing, the same goal Microsoft's Majorana 1 chip pursues.
Hitachi and Tokyo Institute of Science have achieved a 280x improvement in coherence time and 99.1% gate fidelity using ordinary silicon — no special isotopes needed. Unlike IBM and Google's superconducting approach, Hitachi's silicon-based quantum computer leverages existing chip-making infrastructure. With cloud access planned for 2027, Japan is carving its own path in the global quantum race.
A research team at Osaka University's QIQB has proposed a scalable photonic routing architecture for ion trap quantum computers. By comparing two multi-wavelength laser delivery methods, they demonstrated a path to controlling hundreds to thousands of qubits on a single chip—potentially reshaping the future of trapped-ion quantum computing.
Japanese startup blueqat unveiled Japan's first domestic semiconductor quantum computer at SEMICON Japan 2025. Leveraging existing chip manufacturing technology, the company targets 1 million qubits by 2030 and commercial deployment in 2026. With relaxed temperature requirements compared to superconducting systems, desktop-sized quantum computers may become reality.