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quant-ph2026
Variational Quantum Operator Simulation
Satoru Shoji, Kosuke Ito, Yukihiro Shimizu +1
Implementing time-evolution operators in shallow quantum circuits is important for quantum simulations. The standard method of Trotterization requires a large number of gates to ac…
quant-ph2024
Probabilistic channel simulation using coherence
Benchi Zhao, Kosuke Ito, Keisuke Fujii
Channel simulation using coherence, which refers to realizing a target channel with coherent states and free operations, is a fundamental problem in the quantum resource theory of…
quant-ph2023
SantaQlaus: A resource-efficient method to leverage quantum shot-noise for optimization of variational quantum algorithms
Kosuke Ito, Keisuke Fujii
We introduce SantaQlaus, a resource-efficient optimization algorithm tailored for variational quantum algorithms (VQAs), including applications in the variational quantum eigensolv…