Q2B26 Copenhagen | Masahiro Horibe, Deputy Director, AIST/G-QuAT

Q2B26 Copenhagen | Masahiro Horibe, Deputy Director, AIST/G-QuAT

by Masahiro Horibe · View the channel on PSI

Applied Sciences & Engineering Computing & Cybersecurity UYComputer scienceUYXNatural computing
🎙 Masahiro Horibe 👥 6K 📅 October 12, 2026 ⏱ 19 min 👁 31 📄 expert opinion 🧭 2026-10-15
Available in: English (current) Français

Keywords

quantum-HPCG-QuATABCI-Qbenchmarkingstandardization

Summary

In this presentation from Q2B26 Copenhagen, Masahiro Horibe, Deputy Director at AIST/G-QuAT, outlines the concept and ongoing development of a quantum-HPC hybrid computing ecosystem in Japan. He emphasizes that quantum computers will not operate standalone but will be integrated with classical resources like CPUs and GPUs. Citing a McKinsey report, he notes a significant upward revision of the quantum market valuation from 0.6–1.3 trillion USD (2023) to 1.3–2.7 trillion USD (current), urging stakeholders to act now. He traces the technological evolution from 1999 superconducting qubits to IBM’s early quantum systems and the current achievement of thousand-qubit machines. He details G-QuAT’s history, funding (62 billion yen in 2022–2023), and infrastructure, including ABCI-Q, a GPU cluster with over 2,000 NVIDIA H100s ranked 35th on the TOP500. The platform provides hybrid computing connecting simulators and commercial quantum computers (superconducting, neutral atom, and photonic). Future plans include scaling to 10,000+ logical qubits and developing supporting components. He highlights standardization activities within ISO/JTC3, where he leads WG2 on benchmarking, and collaboration with European stakeholders under the QO project. Finally, he identifies commercialization challenges such as cost efficiency, human resources, and regulatory standards, inviting collaboration on G-QuAT’s open platform.

193 words

Critical Evaluation

Value of the Information & Strength of the Argument

The value lies in the firsthand, current information about a national quantum computing initiative, including concrete details about infrastructure (ABCI-Q, 2,000+ H100s) and international standardization efforts. The argumentation is well structured, moving from market analysis to technical architecture and future roadmap. However, it remains an institutional pitch with little independent critical assessment; claims about market size and technological progress are taken from a single consultancy report without cross-verification. The speaker’s authority and access to internal data give weight to the factual statements, but the presentation is descriptive rather than analytical.

Scientific Rigor, Source Quality, Title Accuracy

The speaker is a credible expert with direct involvement in the described projects. The main source explicitly cited is a McKinsey report (not detailed), and the official Q2B site is listed. The talk lacks peer-reviewed references and relies on institutional data. The title accurately reflects the content; the content is a professional update rather than a rigorous scientific study. The inclusion of specific hardware details (e.g., Nvidia H100, TOP500 ranking) adds credibility, but no external independent sources are provided. The presentation’s coherence and the speaker’s role partially compensate for the lack of formal citations.

199 words

Title / Content Match

Titre and content match well; it is a talk by Masahiro Horibe at Q2B26 Copenhagen, focused on the quantum-HPC computing ecosystem.

Quality & Reliability

7/10

Presentation by a recognized expert from AIST/G-QuAT, providing firsthand information about ongoing quantum-HPC projects and standardization efforts. However, it remains an institutional overview rather than peer-reviewed research, and the cited McKinsey report is not referenced with details.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

Concurring Sources

Contribution & Novelties

The presentation offers an insider’s perspective on Japan’s national quantum-HPC initiative, providing concrete details about the ABCI-Q supercomputer and G-QuAT’s infrastructure. It highlights the shift from research to commercialization and the importance of standardization in benchmarking. This is valuable for professionals tracking quantum computing ecosystem developments, though it does not present new scientific results.

Pour aller plus loin :

  • Quantum computing on Wikipedia — Provides a broad overview of the field, useful for context.
  • TOP500 Supercomputer List — Benchmark list where ABCI-Q is ranked; relevant for understanding HPC performance.
  • ISO/IEC JTC3 (Quantum Computing Standardization) — The committee mentioned in the talk for quantum standardization (URL uncertain, so cited without a direct link).

112 words

Radar Profile

The radar profile shows a high score in technical level (8) and moderate scores in quantity and global reliability (both 7), with quality at 6. This indicates a technical talk with substantial specific information, but limited depth in critical analysis or formal citations.

Reliability 7/10