QunaSys Inc. (headquartered in Bunkyo-ku, Tokyo; Representative Director and CEO: Tennin Yan; hereinafter “QunaSys”), a company specializing in the development of quantum computing algorithms and software, announced that its quantum software development kit “QURI SDK Enterprise” has been officially adopted for RIKEN’s Quantum-HPC Hybrid Platform as part of the “JHPC-quanｚtum” project.

JHPC-quantum is a project commissioned by NEDO (New Energy and Industrial Technology Development Organization) under the jurisdiction of the Ministry of Economy, Trade and Industry (METI). The project has developed JHPC-quantum platform for quantum-HPC hybrid applications by linking the supercomputer Fugaku and the IBM Quantum System Two “ibm_kobe” at the RIKEN Center for Computational Science (R-CCS) in Kobe with the trapped-ion quantum computer “Reimei” (Quantinuum System Model H2) at RIKEN’s Wako campus in Saitama.

With this adoption, JHPC-quantum users will be able to access quantum devices from Fugaku’s compute and pre/post nodes through QURI SDK Enterprise. The SDK incorporates state-of-the-art quantum-HPC hybrid algorithm libraries, including QSCI (Quantum Selected Configuration Interaction) and ADAPT-QSCI, supporting computation in fields such as quantum chemistry, materials science, and CAE (Computer-Aided Engineering), with a view to future practical applications. Comprehensive documentation, sample code, and toolchains allow researchers to begin development quickly.

QURI SDK Enterprise supports both the IBM Quantum System Two and the Quantinuum System Model H2, helping researchers build computational workflows that leverage the characteristics of each quantum device. On the HPC side, it supports Fugaku (compute and pre/post nodes) and JHPC-quantum GPU supercomputer “ROQUO”, the NVIDIA GB200 NVL4-based cluster. In both environments, quantum circuit simulation can be run with MPIbased distributed parallelism, using mpiQulacs as the simulator on Fugaku’s compute nodes and a cuQuantum-based backend on ROQUO. Parallel computation spanning multiple nodes and processors makes it possible to simulate quantum circuits at scales beyond the reach of a single node. QunaSys will continue to expand this environment step by step toward utilityscale quantum-HPC hybrid computing. 

■Outlook

Building on this milestone, QunaSys will continue to deepen its collaboration with RIKEN. By expanding the functionality of QURI SDK Enterprise and its support for additional devices and HPC environments, and through collaboration with RIKEN and other research institutions and industry both in Japan and abroad, QunaSys will drive the real-world deployment of quantum-HPC hybrid technology and contribute to the development of Japan’s quantum industry.

■Comments on the Adoption

Mitsuhisa Sato, Division Director of Quantum-HPC Hybrid Platform Division, RIKEN Center for Computational Science (R-CCS) 
The Test User Program, which JHPC-quantum Project is also running, has likewise shown strong demand for QURI SDK Enterprise, which is why we decided to adopt it this time. We hope this will be an opportunity to deepen our collaboration with QunaSys within the project and to make the project's achievements even greater.

Tennin Yan, CEO, QunaSys Inc.
QSCI is a quantum-HPC hybrid algorithm developed by QunaSys. It is now one of the most widely used approaches to quantum-HPC hybrid computing worldwide, and has led to a wide range of research advances, including work to optimize the algorithm for Fugaku and other supercomputers. For quantum computing to deliver practical value, it is essential that these advances be readily accessible to all users, including those in industry. QURI SDK Enterprise brings together algorithms such as QSCI with an easy-to-use environment that lets anyone work across Fugaku, “ROQUO,” and quantum computers. We see this deployment as an opportunity to deepen our collaboration with RIKEN and further accelerate the research and development of quantum-HPC hybrid applications.

■About RIKEN

RIKEN is Japan’s leading national comprehensive research institute in the natural sciences, conducting research across a broad range of fields including physics, engineering, chemistry, mathematical and information sciences, computational science, biology, and medical science. The RIKEN Center for Computational Science (R-CCS) operates the worldclass supercomputer Fugaku, providing computing resources to a wide range of users in universities, research institutions, and industry, and carries out research and development under the banner of “The Science of computing, by computing, and for computing”, contributing to the advancement of computational science and computer science.
Learn more: https://www.riken.jp/en/ 

■About QunaSys Inc.
QunaSys is a quantum computing software company leading the development of quantum algorithms for industrial applications, including chemistry and materials science. In addition to quantum machine learning and quantum chemistry, QunaSys focuses on CAE (Computer-Aided Engineering) using quantum technology, working with academic institutions, industry, and government to unlock the full potential of quantum computers and tackle scientific challenges.
Learn more: https://qunasys.com/en/

■Related links

R-CCS adopts quantum software development kit from QunaSys
QURI SDK documentation site

QunaSys Inc. (“QunaSys”), a quantum computing software company headquartered in Tokyo, Japan, has jointly developed two foundational algorithms with Mitsubishi Electric Corporation (“Mitsubishi Electric”) to advance the use of quantum computing in Computer-Aided Engineering (CAE) for product design and development.

CAE uses computer-based simulations of physical phenomena such as fluid flow, heat, structural behavior, and electromagnetic fields to support product design and performance evaluation. As products become increasingly sophisticated, manufacturers require larger and more accurate simulations, creating growing interest in the future use of quantum computers for CAE.

These algorithms address key challenges in applying quantum computing to CAE: reducing the computational resources required for quantum calculations and improving calculation accuracy.

The first algorithm organizes large-scale matrix data used in CAE into a form that can be handled more efficiently by quantum computers, reducing the computational resources required to perform quantum calculations.
The second algorithm enables parameters required for quantum circuit design to be determined more reliably, helping improve the accuracy of quantum calculations.

Together, these technologies represent a step toward large-scale matrix calculations that take advantage of the capabilities of quantum computers. In the future, quantum-enabled CAE could support applications such as comparing a large number of design conditions at an early stage of product development and conducting highly accurate performance evaluations involving complex physical phenomena.

Part of this research was conducted under the Japan Science and Technology Agency (JST) Moonshot Research and Development Program, Moonshot Goal 6.

For further details, please see Mitsubishi Electric’s news release (in Japanese):
Mitsubishi Electric News Release
“Development of Foundational Algorithms for Applying Quantum Computers in Manufacturing” (unofficial translation)
https://www.mitsubishielectric.co.jp/ja/pr/2026/0824_rd/

■About QunaSys Inc.

QunaSys is a quantum computing software company leading the development of quantum algorithms for industrial applications, including chemistry and materials science. In addition to quantum machine learning and quantum chemistry, QunaSys focuses on CAE (Computer-Aided Engineering) using quantum technology, working with academic institutions, industry, and government to unlock the full potential of quantum computers and tackle scientific challenges.
https://qunasys.com/en/

Free webinar series: Computation, Data & Quantum
Three Thursdays. Three questions industrial R&D teams are already asking.
If you work with simulation, data, or modeling — and you've wondered where quantum computing actually fits — this is for you.

QunaSys Inc. (Headquarters: Bunkyo-ku, Tokyo; CEO: Tennin Yan; hereinafter “QunaSys”), a company specializing in quantum computing software and algorithm development, announced the launch of a dedicated QSCI technical portal and an official partner program for hardware vendors, marking the next phase in the commercial expansion of its proprietary algorithm, Quantum-Selected Configuration Interaction (QSCI).
Originally published in February 2023 (arXiv: 2302.11320), QSCI has evolved from a research breakthrough into a commercially deployable methodology within quantum–HPC hybrid environments.

QunaSys Europe (QunaSys Denmark ApS) and QunaSys Japan (QunaSys Inc.) are participating in Q-Neko (The Nippon-Europe Quantum Koraborēshon), a major EU–Japan initiative aimed at strengthening collaboration in quantum technologies and high-performance computing (HPC). Through this joint engagement across Europe and Japan, we contribute our expertise in application-driven quantum algorithm development and hybrid HPC+QC integration to accelerate the practical use of quantum technologies in industrial settings.

QunaSys Inc. and SoftBank Corp. have jointly published a new white paper analyzing the practical requirements for applying quantum computing to industrial-scale numerical simulations.

QunaSys, a leading innovator in quantum-chemistry software with a Japan–Europe footprint, and Hon Hai Research Institute, the research arm of Hon Hai Technology Group (Foxconn), today announced the acceptance of their joint research paper “Neural Network Assisted Fermionic Compression Encoding: A Lossy-QSCI Framework for Scalable Quantum Chemistry Simulations” in Physical Review Research.

QunaSys is thrilled to announce that the QuEnAIS Consortium, comprising Cortex Discovery, Fraunhofer ITWM’s High Performance Computing (HPC) department and QunaSys, has been awarded a grant under the EUREKA Applied Quantum Call for a Quantum-Enhanced Drug Discovery Project. This grant will support the development of an innovative computational pipeline that aims to revolutionize drug discovery by combining advanced artificial intelligence (AI) algorithms, HPC techniques, and near-term quantum computing technologies.

QunaSys Inc. (Headquarters: Bunkyo-ku, Tokyo; CEO: Tennin Yan; hereinafter “QunaSys”), a company specializing in quantum computing software and algorithm development, releases its inaugural quantum computer benchmark report, “QURI Bench” (preview version), on May 12, 2025, via its official website. This benchmark independently evaluates the performance and characteristics of various quantum hardware platforms. The official version of “QURI Bench” is scheduled for release in July 2025.

Qunasys has been featured in ITWatch for its participation in the Hyper Ten Q project