184 citations · 934 across the 51 of their papers we have counts for
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Optimized synthesis of circuits for diagonal unitary matrices with reflection symmetry
Xinchi Huang, Taichi Kosugi, Hirofumi Nishi +1
During the noisy intermediate-scale quantum (NISQ) era, it is important to optimize the quantum circuits in circuit depth and gate count, especially entanglement gates, including t…
First-quantized adiabatic time evolution for the ground state of a many-electron system and the optimal nuclear configuration
Yusuke Nishiya, Hirofumi Nishi, Yannick Couzinié +2
We propose a novel adiabatic time evolution (ATE) method for obtaining the ground state of a quantum many-electron system on a quantum circuit based on first quantization. As a str…
Quadratic acceleration of multi-step probabilistic algorithms for state preparation
Hirofumi Nishi, Taichi Kosugi, Yusuke Nishiya +1
For quantum state preparation, a non-unitary operator is typically designed to decay undesirable states contained in an initial state using ancilla qubits and a probabilistic actio…
Annealing for prediction of grand canonical crystal structures: Efficient implementation of n-body atomic interactions
Yannick Couzinie, Yusuke Nishiya, Hirofumi Nishi +3
We propose an annealing scheme usable on modern Ising machines for crystal structures prediction (CSP) by taking into account the general n-body atomic interactions, and in particu…
Optimal scheduling in probabilistic imaginary-time evolution on a quantum computer
Hirofumi Nishi, Koki Hamada, Yusuke Nishiya +2
Ground-state preparation is an important task in quantum computation. The probabilistic imaginary-time evolution (PITE) method is a promising candidate for preparing the ground sta…