184 citations · 934 across the 51 of their papers we have counts for
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Acceleration of probabilistic imaginary-time evolution method combined with quantum amplitude amplification
Hirofumi Nishi, Taichi Kosugi, Yusuke Nishiya +1
A probabilistic imaginary-time evolution (PITE) method was proposed as a nonvariational method to obtain a ground state on a quantum computer. In this formalism, the success probab…
First-quantized eigensolver for ground and excited states of electrons under a uniform magnetic field
Taichi Kosugi, Hirofumi Nishi, Yu-ichiro Matsushita
First-quantized eigensolver (FQE) is a recently proposed framework of quantum computation for obtaining the ground state of an interacting electronic system based on probabilistic…
Exhaustive search for optimal molecular geometries using imaginary-time evolution on a quantum computer
Taichi Kosugi, Hirofumi Nishi, Yuichiro Matsushita
We propose a nonvariational scheme for geometry optimization of molecules for the first-quantized eigensolver, a recently proposed framework for quantum chemistry using the probabi…
Systematic study on the dependence of the warm-start quantum approximate optimization algorithm on approximate solutions
Ken N. Okada, Hirofumi Nishi, Taichi Kosugi +1
Quantum approximate optimization algorithm (QAOA) is a promising hybrid quantum-classical algorithm to solve combinatorial optimization problems in the era of noisy intermediate-sc…