Key Findings
AIST has established ABCI-Q as a quantum-HPC platform to bridge the gap between theoretical quantum potential and practical implementation. The center focuses on scaling toward fault-tolerant systems and integrating quantum processing units (QPUs) into existing HPC workflows. A primary objective is the transition to agent-driven operation, where AI agents—rather than humans—create, execute, and revise jobs, necessitating a redesign of APIs and schedulers to treat CPU, GPU, and QPU resources uniformly.
Technical Details
The ABCI-Q software stack connects disparate hardware through a unified layer including Covalent and Prefect for orchestration, a container engine, and frameworks such as Qiskit, CUDA-Q, Bloqade, and QURI. Users access the system via SSH, REST API, or a browser-based Open OnDemand interface with Jupyter notebooks.
The hardware infrastructure consists of:
- System H: A cluster of 505 compute nodes featuring approximately 2,020 NVIDIA H100 GPUs on an InfiniBand fabric.
- QuEra Gemini: A neutral-atom system operating at room temperature, connected via an SD network. The installation was backed by a $41 million USD contract.
- OptQC: A 129-qumode optical quantum computer.
A demonstration using a local LLM and a message-passing control plane currently translates plain-language prompts into executable tasks. Additionally, a collaboration with the University of Osaka utilized 1,000 GPUs to perform one of the world’s largest quantum circuit simulations for quantum chemistry.
Background & Context
ABCI-Q is housed within the G-QuAT facility, established on July 27, 2023, as part of Japan’s national Quantum Innovation Hub. As of May 2026, the center employs over 300 researchers, staff, and students. The facility is physically split between AIST’s headquarters building (System H and System F) and a separate building 350 meters away for the Gemini system.
Significance & Outlook
AIST anticipates that fault-tolerant quantum systems will become practical in the 2030s. By providing a “landing zone” for hardware providers like QuEra, ABCI-Q serves as a co-design platform to validate integration standards and accelerate the development of practical, hybrid quantum-classical solutions.
Source: https://quantumzeitgeist.com/abci-q-quantum-hpc-testbed-aist/
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