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Quantum-HPC Workflows Across Multiple Quantum Computing Platforms: Two Case Studies
Philipp Seitz, Miwako Tsuji, John Children, Yuta Kikuchi, Riku Masui, Juan Pedersen, Kentaro Yamamoto, Ross Duncan·September 25, 2026
Quantum Physicscs.DC
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Abstract
We describe the Quantum-HPC hybrid system comprising the supercomputer Fugaku, the QPUs Quantinuum Reimei and ibm_kobe, and the Tierkreis hybrid workflow software. We present two demonstrations of the system at work. In the first, we compute the excited states of a biomolecular system using Fugaku and Reimei (simulator) to handle classical and quantum parts of the workflow respectively. In the second, Fugaku coordinates Reimei and ibm_kobe working together in a combined VQE + QPE workflow to compute the ground state energy of a simple system.