Quantinuum and RIKEN expand quantum-AI partnership in Japan
Quantinuum and RIKEN announced an expanded quantum-AI hybrid supercomputing partnership on November 10, 2026, after upgrading the Reimei computer to System Model H2. SoftBank joins a separate, exploratory data-centre agreement, and the sources reviewed disclose no financial terms.
Quantinuum (NASDAQ: QNT) and RIKEN announced an expanded partnership on November 10, 2026 to advance quantum-AI hybrid supercomputing in Japan. The work rests on the completed upgrade of the Reimei quantum computer to System Model H2. SoftBank Corp. joins a separate agreement to explore linking quantum computing with AI data centres, and the sources reviewed do not disclose any financial terms.
Who is involved
Quantinuum is a full-stack quantum computing company. The Quantum Insider's company profile describes a proprietary trapped-ion QCCD architecture and multiple commercial hardware generations. RIKEN is Japan's national comprehensive research institute, founded in 1917 as a private scientific research foundation.
The upgrade and the new MOU
Reimei is installed at RIKEN and operated as part of the JHPC-quantum project, funded by NEDO (New Energy and Industrial Technology Development Organization). NEDO operates under Japan's Ministry of Economy, Trade and Industry. The project belongs to the Post 5G Information and Communications Systems infrastructure programme (JPNP20017).
Mitsuhisa Sato of RIKEN's Center for Computational Science said the H2 system can tackle larger and more complex problems than the previous H1 system. He added that a newly signed Memorandum of Understanding will expand quantum computing research for RIKEN's AI for Science initiative.
Two early research projects
The partners will use the upgraded platform to combine quantum computing, supercomputing and AI for use-case development in electronics, energy and life sciences. Both projects began operating on Reimei before the public launch of its services.
The first project uses RIKEN's JHPC-quantum GPU supercomputer, ROQUO, to train an AI model on Reimei-generated quantum data for magnetism simulations. Preliminary results suggest the model predicts more accurately than models trained on classical simulations alone, and more precisely than the quantum computer itself.
The second project combines Reimei, the Fugaku supercomputer and NVIDIA's evolutionary AI agent running on ROQUO. It simulates a complex photoactive biomolecule to understand how biomolecules respond to light, which could inform solar cell design.
Fault-tolerant roadmap and SoftBank
The partners will work with Japanese universities and domestic component suppliers toward a "Made with Japan" fault-tolerant quantum computer. The release gives no timeline, budget or hardware specification for this machine.
Under a separate agreement, Quantinuum, RIKEN and SoftBank will explore connecting quantum computing directly with AI data centres in Japan. They will assess infrastructure readiness and how connected systems could support commercial quantum-AI hybrid services. The release frames this as exploration, not a commitment to build. SoftBank's Takenori Kobayashi said the company aims to advance a Quantum AI Datacenter serving businesses across Japan.
The release also cites a planned $1 billion U.S.-Japan partnership under the U.S. Genesis Mission. That is a government-level plan, not funding for this deal.
The stock move
Blockonomi reported that QNT rose 6.57% to close at $40.04, then fell 2.85% to $38.90 in premarket trading. Those figures come only from Blockonomi and could not be confirmed against an exchange or another outlet, so they should be treated as unverified.
Blockonomi's article was published at 14:00 UTC, before the 14:30 UTC U.S. market open. The Quantum Insider page carrying the release was retrievable by 08:48 UTC. The stated close therefore most likely refers to the November 9 session, though this is an inference and not confirmed. The only announcement-day move reported is the premarket decline, so the available evidence does not support attributing the rise to the news.
For crypto-market context, Bitcoin traded at $73,720.30 at 14:04 UTC on November 10, 2026. QNT is an equity, and no link between the announcement and crypto prices is claimed.
What to watch
The SoftBank work is exploratory, the magnetism result is preliminary, and the fault-tolerant machine has no disclosed schedule.