RIKEN Scales Quantum-Supercomputing in Japan with Quantinuum System Upgrade
Quantinuum’s H2 quantum computer to expand the scope and accuracy of pharmaceutical and materials science research using the Reimei-Fugaku hybrid compute platform
April 16, 2026
Tokyo, Japan, April 14th, 2026 — Quantinuum, a leading quantum computing company, today announced that RIKEN, Japan’s premier national research institute, has procured its System Model H2 quantum computer to scale the capability of “Reimei-Fugaku,” a hybrid quantum-supercomputer platform in Japan.
The Reimei-Fugaku platform represents the frontier of computing technology. Launched in the spring of 2025, it combines Quantinuum’s "Reimei" quantum system with RIKEN’s "Fugaku," one of the world’s fastest supercomputers—more formally known as a high-performance computing (HPC) system.
Now, the hybrid compute platform is getting a substantial upgrade. Earlier this month, Quantinuum delivered its H2 system to RIKEN’s research facility near Tokyo, where assembly is already underway to replace its predecessor, System Model H1, which Reimei has been based on to date. The newer-generation, 56-qubit system is engineered for high-fidelity operations that can reduce time-to-solution, enable larger workloads, and support higher-value applications.
Technology leaders see hybrid compute systems as a practical way to overcome the limits of classical HPC. By combining the significant data-processing power of HPC with a quantum computer’s ability to model complex molecules and materials, researchers could be enabled to solve specialized mathematical problems that are impractical for classical systems to handle alone.
Researchers have already demonstrated this potential using the current Reimei-Fugaku platform. In a workflow with relevance potentially extending to future pharmaceutical applications, they successfully simulated biomolecular reactions at an accuracy that would be infeasible for HPC to achieve in isolation.
With multiple studies in chemistry and materials science already underway on the platform, this H2 upgrade is expected to accelerate research and unlock even more complex scientific discoveries across disciplines.
Dr. Mitsuhisa Sato, Division Director of the Quantum-HPC Hybrid Platform Division, RIKEN Center for Computational Science, said: “Since its installation in February 2025, Reimei H1 has been widely used by JHPC-quantum users and has delivered significant results, thanks to its high fidelity and flexible qubit connectivity. The upgrade to H2 is exactly what we have been eagerly anticipating, and with its 56 qubits, we expect it to play a key role in demonstrating quantum advantage through quantum–HPC hybrid computing.”
Dr. Rajeeb Hazra, President and CEO of Quantinuum, said: “We believe RIKEN’s decision to continue adopting Quantinuum systems to meet its ambitious objectives is a validation of our technology roadmap and a reflection of the success of our valued partnership. With Quantinuum and RIKEN’s combined leadership in quantum and HPC, respectively, we expect to continue pushing the boundaries of computing to address some of the most critical and complex challenges facing science and industry today.”
This development reflects the continued progress of Quantinuum and RIKEN’s collaboration to advance quantum-HPC hybrid infrastructure in Japan. Quantinuum intends to continue working with the country’s research community to accelerate real-world use cases and contribute to the growth of its quantum ecosystem.
About RIKEN
RIKEN, a National Research and Development Agency, is Japan’s leading national comprehensive research institution renowned for high-quality research in a diverse range of scientific disciplines. Founded in 1917, initially as a private research foundation, RIKEN has grown rapidly in size and scope, today encompassing a network of world-class research centers and institutes across Japan.
About Quantinuum
Quantinuum is a leading quantum computing company offering a full-stack platform designed to make quantum computing deployable in real-world environments. The company has commercially deployed multiple generations of quantum systems built on the well-established QCCD architecture, which it has implemented with novel designs and capabilities to achieve the industry’s highest accuracy levels based on average two-qubit gate fidelity.[i] Quantinuum has active engagements with market leaders across pharmaceuticals, material science, financial services, and government and industrial markets.
The company has a global workforce of approximately 700 employees, including top scientists and researchers. Over 70% of its technology team hold PhDs. Quantinuum’s headquarters is in Broomfield, Colorado, with additional facilities across the United States, United Kingdom, Germany, Japan, and Singapore.
Quantinuum, the world’s largest integrated quantum company, pioneers powerful quantum computers and advanced software solutions. Quantinuum’s technology drives breakthroughs in materials discovery, cybersecurity, and next-gen quantum AI. With over 500 employees, including 370+ scientists and engineers, Quantinuum leads the quantum computing revolution across continents.
September 4, 2026
Quantinuum to Participate in the Bernstein 23rd Annual Pan-European Strategic Decisions Conference
BROOMFIELD, Colo., September 4, 2026 - Quantinuum Inc. (Nasdaq: QNT) (the “Company”), a leading quantum computing company, today announced that members of its management team will participate in the Bernstein 23rd Annual Pan-European Strategic Decisions Conference, taking place September 9–10, 2026, in London, United Kingdom.
Quantinuum will participate in a fireside chat and host one-on-one meetings with investors during the conference.
About Quantinuum
Quantinuum is a leading quantum computing company offering a full-stack platform designed to make quantum computing deployable in real-world environments. The company has commercially deployed multiple generations of trapped-ion based quantum systems built on the well-established QCCD architecture, which it has implemented with novel designs and capabilities to achieve the industry’s highest accuracy levels based on average two-qubit gate fidelity. Quantinuum has active engagements with market leaders across pharmaceuticals, material science, financial services, and government and industrial markets, as well as academic and research institutions globally.
The company has a global workforce of approximately 800 employees, including top scientists and researchers. Over 70% of its technology team holds PhDs or Master’s degrees. Quantinuum’s headquarters is in Broomfield, Colorado, with additional facilities across the United States, United Kingdom, Germany, Japan, Qatar, and Singapore.
Quantinuum Signs Non-binding MOU with Aramco to Explore Synergies Leveraging Industrial Quantum Computing Research, Applications, and Expertise
Quantinuum and Aramco sign MOU at LEAP: Dr. Rajeeb Hazra, President and CEO of Quantinuum (left), and Sami Al Ajmi, Senior Vice President of Digital & Information Technology at Aramco (right), at the signing ceremony in Riyadh, Saudi Arabia.
Non-binding Memorandum of Understanding (MOU) aims to support innovation and operational excellence within the energy sector. Riyadh, August 31, 2026: Quantinuum, a leading quantum computing company, today announced the signing of a non-binding MOU with Aramco, one of the world’s leading integrated energy and chemicals companies, to explore a series of industrial use cases, enhance quantum computing capabilities, and prepare for a potential research collaboration focused on fault-tolerant quantum computing.
Under the MOU, the companies intend to undertake preliminary technical onboarding and engage in knowledge exchange activities. They will also identify Aramco’s challenges that may be suitable for quantum computing research with an emphasis on solving complex problems in energy and digital transformation. The collaboration aims to assess how future generations of quantum systems may address relevant scientific and industrial challenges, and to benchmark different quantum computing modalities.
The collaboration complements Aramco’s existing initiatives to position itself as a leader in the application of advanced quantum technologies within the energy industry, reinforcing its efforts towards supporting the digital transformation of the sector and contributing to the evolving quantum computing roadmap for the energy industry.
“Organizations that expect to benefit from quantum computing need to begin developing their expertise, algorithms and workflows today,” said Dr. Rajeeb Hazra, President and CEO of Quantinuum. “This MOU creates a framework for Quantinuum and Aramco to exchange expertise, identify important industrial challenges and prepare for a deeper research collaboration. By combining Aramco’s scientific and engineering knowledge with Quantinuum’s integrated hardware and software capabilities, we aim to build a strong foundation for research across future generations of quantum computing.”
About Quantinuum
Quantinuum is a leading quantum computing company offering a full-stack platform designed to make quantum computing deployable in real-world environments. The company has commercially deployed multiple generations of trapped-ion based quantum systems built on the well-established QCCD architecture, which it has implemented with novel designs and capabilities to achieve the industry’s highest accuracy levels based on average two-qubit gate fidelity.1 Quantinuum has active engagements with market leaders across pharmaceuticals, material science, financial services, and government and industrial markets, as well as academic and research institutions globally. The company has a global workforce of over 800 employees, including top scientists and researchers. Quantinuum’s headquarters is in Broomfield, Colorado, with additional facilities across the United States, United Kingdom, Germany, Japan, Qatar, and Singapore. For more information, please visit www.quantinuum.com.
This press release contains certain statements that may be deemed “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that are not historical facts. The words “anticipate,” “assume,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “future,” “will,” “seek,” “foreseeable,” the negative version of these words, or similar terms and phrases are intended to identify forward-looking statements. Such statements are based on certain assumptions and assessments made by our management in light of their experience and their perception of historical trends, current economic and industry conditions, expected future developments and other factors they believe to be appropriate. The forward-looking statements included in this release are also subject to a number of material risks and uncertainties, including but not limited to economic, competitive, governmental, and technological factors affecting our operations, markets, products, services and prices. New factors emerge from time to time, and it is not possible for Quantinuum to predict all such factors. For additional information on these and other risks that could affect Quantinuum’s forward-looking statements, see Quantinuum’s risk factors discussed in its filings with the U.S. Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the period ended June 30, 2026, as such risk factors may be updated from time to time. Any forward-looking statement speaks only as of the date on which it is made, and, except as required by law, Quantinuum does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.
Quanta Computer and Quantinuum Partner to Build an Industrial Foundation for Large-Scale Quantum Computing
Partnership combines Quantinuum's quantum computing leadership with Quanta Computer's expertise in industrializing advanced computing systems at a global scale
Companies plan to co-develop the infrastructure, systems engineering, and manufacturing capabilities required for future generations of quantum computers
Collaboration aims to support Quantinuum's technology roadmap toward commercially-deployable, large-scale, fault-tolerant quantum systems
BROOMFIELD, Colo., and TAIPEI – August 13, 2026 – Quanta Computer (“Quanta”), a Fortune Global 500 manufacturer of advanced computing and cloud infrastructure, and Quantinuum (Nasdaq: QNT), a leading quantum computing company, today announced a collaborative development agreement to help establish an industrial foundation for the next era of quantum computing.
Under the terms of the agreement, the companies plan to jointly develop critical hardware infrastructure supporting future generations of Quantinuum's quantum systems, combining Quantinuum's quantum technology leadership with Quanta's expertise in scaling sophisticated computing platforms.
Quanta and Quantinuum aim to create a practical pathway from today's quantum systems to commercially deployable quantum computers capable of supporting broad enterprise and scientific adoption. The collaboration is aiming to accelerate the path toward scalable quantum computing infrastructure. With joint engineering work already underway, the companies are designing the next generation of hardware infrastructure with the objective of making future quantum computers more modular, manufacturable, and scalable.
"It is time for quantum computing to transition from breakthroughs in physics achieved in the lab to breakthroughs in system manufacturing that can be deployed and operated at scale," said Dr. Rajeeb Hazra, President and CEO of Quantinuum. "Quanta has earned a global reputation for industrializing some of the most advanced computing technologies in the world. By working together, we can help ensure the manufacturing ecosystem, engineering expertise, and supply chains required for large-scale quantum computing evolve in parallel with the technology itself."
About Quantinuum
Quantinuum is a leading quantum computing company offering a full-stack platform designed to make quantum computing deployable in real-world environments. The company has commercially deployed multiple generations of trapped-ion based quantum systems built on the well-established QCCD architecture, which it has implemented with novel designs and capabilities to achieve the industry’s highest accuracy levels based on average two-qubit gate fidelity. Quantinuum has active engagements with market leaders across pharmaceuticals, material science, financial services, and government and industrial markets, as well as academic and research institutions globally. The company has a global workforce of approximately 700 employees, including top scientists and researchers. Over 70% of its technology team holds PhDs or Master’s degrees. Quantinuum’s headquarters is in Broomfield, Colorado, with additional facilities across the United States, United Kingdom, Germany, Japan, Qatar, and Singapore. For more information, please visit www.quantinuum.com.
This press release contains certain statements that may be deemed “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that are not historical facts. The words “anticipate,” “assume,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “future,” “will,” “seek,” “foreseeable,” the negative version of these words, or similar terms and phrases are intended to identify forward-looking statements. Such statements are based on certain assumptions and assessments made by our management in light of their experience and their perception of historical trends, current economic and industry conditions, expected future developments and other factors they believe to be appropriate. The forward-looking statements included in this release are also subject to a number of material risks and uncertainties, including but not limited to economic, competitive, governmental, and technological factors affecting our operations, markets, products, services and prices. New factors emerge from time to time, and it is not possible for Quantinuum to predict all such factors. For additional information on these and other risks that could affect Quantinuum’s forward-looking statements, see Quantinuum’s risk factors discussed in its filings with the U.S. Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the period ended June 30, 2026, as such risk factors may be updated from time to time. Any forward-looking statement speaks only as of the date on which it is made, and, except as required by law, Quantinuum does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.
