Author

Keisuke Fujii

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Preprint Sep 2026

Optimized Randomized Hamiltonian Simulation via Average-Error Analysis

This work develops a framework for randomized Hamiltonian simulation in which Hamiltonian terms are sampled with arbitrary probabilities and the corresponding short-time evolutions are implemented sequentially, establishing average-error optimization as a practical design principle for randomized Hamiltonian simulation...

Hayata Morisaki, Keisuke Fujii · 0 citations

Preprint Jul 2026

Quantum machine learning interatomic potential: Application of variational quantum algorithm

This study applied quantum circuit learning to a machine learning interatomic potential (MLIP) for predicting the energies of molecules in molecular datasets and confirmed that inserting a quantum circuit into the classical neural network of the MLIP yielded slightly higher accuracy than the fully classical neural netw...

Kohei Numata, Wataru Mizukami, K. Mitarai et al. · 0 citations