Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Hiroki Oshiyama"'
Autor:
Hiroki Oshiyama, Masayuki Ohzeki
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract Recently, inspired by quantum annealing, many solvers specialized for unconstrained binary quadratic programming problems have been developed. For further improvement and application of these solvers, it is important to clarify the differenc
Externí odkaz:
https://doaj.org/article/ce8f8f126ace479aaf6fa885e910b7ea
Autor:
Hasitha Muthumala Waidyasooriya, Hiroki Oshiyama, Yuya Kurebayashi, Masanori Hariyama, Masayuki Ohzeki
Publikováno v:
IEEE Access, Vol 10, Pp 65103-65117 (2022)
Quantum computing is regarded as the future of computing that hopefully provides exponentially large processing power compared to the conventional digital computing. However, current quantum computers do not have the capability to correct errors caus
Externí odkaz:
https://doaj.org/article/f27aaf3ee4c34d65817c4937ac8a95a6
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043064 (2021)
Dynamical quantum phase transitions (DQPTs) are topologically characterized in quantum quench dynamics in topological systems. In this paper, we study Loschmidt amplitudes and DQPTs in quantum quenches in mirror-symmetric topological phases. Based on
Externí odkaz:
https://doaj.org/article/07cdf0e23259453b8045d5c6328d7ece
Publikováno v:
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences. 381(2241)
We study the statistics of the kink number generated by quantum annealing in a one-dimensional transverse Ising model coupled to a bosonic thermal bath. Using the freezing ansatz for quantum annealing in the thermal environment, we show the relation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::078dba28eedc93008185ced6821a2cf8
https://pubmed.ncbi.nlm.nih.gov/36463929
https://pubmed.ncbi.nlm.nih.gov/36463929
Autor:
Yuki Bando, Yuki Susa, Hiroki Oshiyama, Naokazu Shibata, Masayuki Ohzeki, Fernando Javier Gómez-Ruiz, Daniel A. Lidar, Sei Suzuki, Adolfo del Campo, Hidetoshi Nishimori
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033369 (2020)
The number of topological defects created in a system driven through a quantum phase transition exhibits a power-law scaling with the driving time. This universal scaling law is the key prediction of the Kibble-Zurek mechanism (KZM), and testing it u
Externí odkaz:
https://doaj.org/article/5bc2e71e937243b4b18cf924e82141ee
Dynamical quantum phase transitions (DQPTs) are topologically characterized in quantum quench dynamics in topological systems. In this paper, we study Loschmidt amplitudes and DQPTs in quantum quenches in mirror-symmetric topological phases. Based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d5c832a5577a6b55881c598f2efec45
http://arxiv.org/abs/2105.12768
http://arxiv.org/abs/2105.12768
Publikováno v:
Physical Review B. 103
We study the ground state of the one-dimensional ``$t\text{\ensuremath{-}}{J}_{s}\text{\ensuremath{-}}{J}_{\ensuremath{\tau}}$ model,'' which is a variant of the $t\text{\ensuremath{-}}J$ model with an additional channel degree of freedom. The model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b282cd639615f8423f57c577fd7ed3ff
https://doi.org/10.1103/physrevb.103.165115
https://doi.org/10.1103/physrevb.103.165115
We study quantum annealing in the quantum Ising model coupled to a thermal environment. When the speed of quantum annealing is sufficiently slow, the system evolves following the instantaneous thermal equilibrium. This quasistatic and isothermal evol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37b4b5dd259045ac8b45d3c9c49bf0ad
http://arxiv.org/abs/2102.02570
http://arxiv.org/abs/2102.02570
We study the Kibble-Zurek mechanism in the transverse Ising chain coupled to a dissipative boson bath, making use of a new numerical method with the infinite time evolving block decimation combined with the discrete-time path integral. We first show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95eb90f40a99573d7d416bec807edc84
http://arxiv.org/abs/2005.05621
http://arxiv.org/abs/2005.05621
Autor:
Fernando Javier Gómez-Ruiz, Sei Suzuki, Daniel A. Lidar, Hiroki Oshiyama, Adolfo del Campo, Yuki Bando, Naokazu Shibata, Yuki Susa, Hidetoshi Nishimori, Masayuki Ohzeki
The number of topological defects created in a system driven through a quantum phase transition exhibits a power-law scaling with the driving time. This universal scaling law is the key prediction of the Kibble-Zurek mechanism (KZM), and testing it u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d766d4e69d6af6015aa7df3bf074657