Q2B26Tokyo | Mitsuhisa Sato, Division Director of Quantum-HPC Hybrid Platform Division, RIKEN

Q2B26Tokyo | Mitsuhisa Sato, Division Director of Quantum-HPC Hybrid Platform Division, RIKEN

🎙 Mitsuhisa Sato 👥 6K 📅 June 17, 2026 ⏱ 19 min 👁 258 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

quantum-HPC hybridNISQon-premise quantumquantum chemistrySQD

Summary

Mitsuhisa Sato, Division Director of the Quantum-HPC Hybrid Platform Division at RIKEN, presents the current status and outcomes of the JHPC Quantum Platform project. The project, a NEDO-funded initiative, aims to integrate quantum computers with the Fugaku supercomputer to expand computational frontiers. Two on-premise quantum computers have been implemented: an IBM Heron R2 QPU with 156 qubits in Kobe and a Quantinuum H1 ion trap (20 qubits) at Wako, with plans to upgrade to H2 (56 qubits). The project focuses on software integration, offering both loosely coupled (workflow-based) and tightly coupled (RPC-based) programming models. Key applications include quantum chemistry and quantum machine learning. Notable results include a quantum-classical hybrid calculation for a biomolecular system (retinol) using the SQD method, achieving results close to DMRG, and a large-scale experiment collecting over 1.3 billion shots using two quantum computers and Fugaku. The project also includes a GPU-accelerated quantum eigensolver (GQE) and AI-assisted quantum algorithms. The project is halfway through its 5-year timeline, with plans for full-scale operation and external user testing. A test user program is open for applications.

177 words

Critical Evaluation

Value of the Information & Strength of the Argument

The presentation provides valuable insights into the practical implementation of quantum-HPC hybrid systems, a topic of significant current interest. The speaker, an expert in supercomputing, offers a credible perspective on the challenges and opportunities. The argumentation is based on concrete project milestones and experimental results, such as the retinol molecule calculation and the 1.3 billion shots experiment, which demonstrate the feasibility of large-scale hybrid computations. However, the talk is largely descriptive and promotional, with limited critical analysis of limitations or alternative approaches. The speaker does not delve into technical details of the algorithms or system software, and the claims of ‘quantum utility’ are not rigorously substantiated. Overall, the information is valuable for understanding the state of the art, but the argumentation could be more critical and detailed.

Scientific Rigor, Source Quality, Title Accuracy

The presentation is scientifically rigorous in that it describes a real, ongoing project with specific technical specifications and results. The speaker is a recognized expert, and the project involves reputable institutions (RIKEN, University of Tokyo, Osaka University, SoftBank). However, the talk does not cite external sources or provide references to publications, making it difficult to verify the claims independently. The title accurately reflects the content, as it is a presentation by Mitsuhisa Sato on the Quantum-HPC Hybrid Platform. The description provides a link to the Q2B conference website, which may contain additional information but is not a direct source for the claims made. Overall, the scientific rigor is moderate, with a lack of verifiable sources being a notable weakness.

261 words

Title / Content Match

The title accurately reflects the content: a presentation by Mitsuhisa Sato on the Quantum-HPC Hybrid Platform at RIKEN.

Quality & Reliability

7/10

Presentation by a leading expert in HPC and quantum computing, describing a concrete national project with specific technical details and results. However, the talk is largely descriptive and promotional, lacking detailed methodology or independent verification.

Key Moments

Cited Sources

  • Q2B Conference Website — The presentation was given at the Q2B conference, and the link provides information about the event.

Concurring Sources

  • RIKEN R-CCS website — RIKEN Center for Computational Science, which operates Fugaku and is involved in the project.

Contribution & Novelties

The presentation provides an update on the JHPC Quantum Platform, a pioneering project integrating on-premise quantum computers with the Fugaku supercomputer. The main novelty is the demonstration of large-scale hybrid quantum-classical computations, such as the retinol molecule calculation and the 1.3 billion shots experiment, which are unprecedented in scale. The project also introduces a test user program to evaluate the system with external users, which is a valuable approach for practical development.

Pour aller plus loin :

  • Quantum utility — Concept central to the project’s goals.
  • Quantum error correction — Future direction mentioned in the context of GPU use.
  • NISQ — The current quantum computing era discussed in the talk.

110 words

Radar Profile

The radar profile shows a balanced performance across all dimensions, with slightly higher scores in information quantity and quality, reflecting the expert's detailed but descriptive presentation. The technical level is moderate, suitable for a general technical audience, and the reliability is solid due to the speaker's authority and concrete results.

Reliability 7/10

💬 No comments were provided for analysis.