Quantum-HPC Workflows Across Multiple Quantum Computing Platforms: Two Case Studies
This study addresses the challenge of integrating cross-platform hybrid quantum-HPC workflows by constructing a collaborative computing system comprising the Fugaku supercomputer, Quantinuum Reimei and ibm_kobe quantum processors, and the Tierkreis software framework. Through efficient classical-quantum task partitioning, the authors innovatively combine the Variational Quantum Eigensolver (VQE) and Quantum Phase Estimation (QPE) algorithms to design a multi-platform cooperative workflow. The proposed system successfully executes ground-state and excited-state energy calculations for biomolecules, validating its feasibility and accuracy on real quantum hardware. Ultimately, this work establishes a scalable hybrid architecture paradigm for large-scale quantum chemistry simulations.