Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Taichi Kosugi"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Quantum approximate optimization algorithm (QAOA) is a promising hybrid quantum-classical algorithm to solve combinatorial optimization problems in the era of noisy intermediate-scale quantum computers. Recently it has been revealed that war
Externí odkaz:
https://doaj.org/article/c7705909b6794f85a070044e827c6523
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-9 (2023)
Abstract This study proposes a nonvariational scheme for geometry optimization of molecules for the first-quantized eigensolver, which is a recently proposed framework for quantum chemistry using probabilistic imaginary-time evolution (PITE). In this
Externí odkaz:
https://doaj.org/article/40b3d9d534f3458da706f349e4d2e88b
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043048 (2023)
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 state of the Hamiltonian, which comprises a single ancilla qubit and forw
Externí odkaz:
https://doaj.org/article/f26a5023be1d41a6b6d8dc7ce8485351
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
Abstract The imaginary-time evolution method is a well-known approach used for obtaining the ground state in quantum many-body problems on a classical computer. A recently proposed quantum imaginary-time evolution method (QITE) faces problems of deep
Externí odkaz:
https://doaj.org/article/2a1286c73f1745b082f552062a7cf304
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033121 (2022)
Imaginary-time evolution (ITE) on a quantum computer is a promising formalism for obtaining the ground state of a quantum system. The probabilistic ITE (PITE) exploits measurements to implement nonunitary operations, and it can avoid the restriction
Externí odkaz:
https://doaj.org/article/2f30fd3f0aec4ba686f2640dd750be76
Autor:
Taichi Kosugi, Yu-ichiro Matsushita
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033043 (2020)
We propose a scheme for the construction of linear-response functions of an interacting electronic system via quantum phase estimation and statistical sampling on a quantum computer. By using the unitary decomposition of electronic operators for avoi
Externí odkaz:
https://doaj.org/article/dfd3c1527b5b42c38bf40aba47b9803d
Autor:
Yu-ichiro Matsushita, Taichi Kosugi
Publikováno v:
Physical Review Research. 2
This work proposes a generic construction scheme for the quantum circuit implementing a nonunitary operator appearing in electronic-structure calculations. The authors demonstrate that the scheme enables one via probabilistic state preparation to cal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bec4b85dda6aaabf2a27e92c2df994dc
https://doi.org/10.1103/physrevresearch.2.033043
https://doi.org/10.1103/physrevresearch.2.033043
Autor:
Taichi Kosugi, Yu-ichiro Matsushita
Publikováno v:
Physical Review A. 101
We propose a scheme for the construction of the one-particle Green's function (GF) of an interacting electronic system via statistical sampling on a quantum computer. Although the nonunitarity of creation and annihilation operators for the electronic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8da9b5b2bf9c6a9de5ad207e779d5865
https://doi.org/10.1103/physreva.101.012330
https://doi.org/10.1103/physreva.101.012330
Autor:
Taichi Kosugi, Takahiro Misawa, Kazuma Nakamura, Mitsuaki Kawamura, Terumasa Tadano, Yuichi Motoyama, Yusuke Nomura, Yoshihide Yoshimoto, Kazuyoshi Yoshimi
RESPACK is a first-principles calculation software for evaluating the interaction parameters of materials and is able to calculate maximally localized Wannier functions, response functions based on the random phase approximation and related optical p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::773155ef41cbbe7285d4638f3b7a2116
Autor:
Taichi Kosugi, Yu-ichiro Matsushita
Publikováno v:
Journal of Chemical Physics; 2017, Vol. 147 Issue 11, p1-15, 15p, 5 Graphs