Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Oshiyama, Hiroki"'
Publikováno v:
Phys. Rev. A 108, 042403, (2023)
The application of quantum annealing to the optimization of continuous-variable functions is a relatively unexplored area of research. We test the performance of quantum annealing applied to a one-dimensional continuous-variable function with a rugge
Externí odkaz:
http://arxiv.org/abs/2305.06631
The Boltzmann machine is one of the various applications using quantum annealer. We propose an application of the Boltzmann machine to the kernel matrix used in various machine-learning techniques. We focus on the fact that shift-invariant kernel fun
Externí odkaz:
http://arxiv.org/abs/2304.10144
Publikováno v:
Phys. Rev. Research 3, 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:
http://arxiv.org/abs/2105.12768
Autor:
Oshiyama, Hiroki, Ohzeki, Masayuki
Publikováno v:
Scientific Reports 12, 2146 (2022)
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 differences in the
Externí odkaz:
http://arxiv.org/abs/2104.14096
Publikováno v:
Phys. Rev. Lett. 128, 170502 (2022)
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:
http://arxiv.org/abs/2102.02570
Publikováno v:
Phys. Rev. B 103, 165115 (2021)
We study the ground state of the one-dimensional "$t$-$J_s$-$J_{\tau}$ model," which is a variant of the $t$-$J$ model with additional channel degree of freedom. The model is not only a generalization of the $t$-$J$ model but also an effective model
Externí odkaz:
http://arxiv.org/abs/2012.06935
Publikováno v:
J. Phys. Soc. Jpn. 89, 104002 (2020)
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:
http://arxiv.org/abs/2005.05621
Autor:
Bando, Yuki, Susa, Yuki, Oshiyama, Hiroki, Shibata, Naokazu, Ohzeki, Masayuki, Gómez-Ruiz, Fernando Javier, Lidar, Daniel A., del Campo, Adolfo, Suzuki, Sei, Nishimori, Hidetoshi
Publikováno v:
Phys. Rev. Research 2, 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:
http://arxiv.org/abs/2001.11637
We study quantum annealing of pure and random transverse Ising chains that are coupled to boson baths, using a novel numerical method based on the combination of the quasi-adiabatic propagation path integral (QUAPI) and the matrix product state (MPS)
Externí odkaz:
http://arxiv.org/abs/1809.09827
Autor:
Oshiyama, Hiroki1 (AUTHOR) hiroki.oshiyama.e6@tohoku.ac.jp, Ohzeki, Masayuki1,2,3 (AUTHOR)
Publikováno v:
Scientific Reports. 2/9/2022, Vol. 12 Issue 1, p1-10. 10p.
