Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Kaminishi, Eriko"'
Stochastic gradient descent (SGD) is a frequently used optimization technique in classical machine learning and Variational Quantum Eigensolver (VQE). For the implementation of VQE on quantum hardware, the results are always affected by measurement s
Externí odkaz:
http://arxiv.org/abs/2406.09780
Autor:
Wada, Kaito, Raymond, Rudy, Ohnishi, Yu-ya, Kaminishi, Eriko, Sugawara, Michihiko, Yamamoto, Naoki, Watanabe, Hiroshi C.
Publikováno v:
Physical Review A, 105 (6), 062421 (2022)
We propose a novel method to sequentially optimize arbitrary single-qubit gates in parameterized quantum circuits for simulating real and imaginary time evolution. The method utilizes full degrees of freedom of single-qubit gates and therefore can po
Externí odkaz:
http://arxiv.org/abs/2111.05538
We study quantum double dark-solitons by constructing corresponding quantum states in the Lieb-Liniger model for the one-dimensional Bose gas. Here we expect that the Gross-Pitaevskii (GP) equation should play a central role in the long distance mean
Externí odkaz:
http://arxiv.org/abs/2111.02686
Variational quantum algorithms, which utilize Parametrized Quantum Circuits (PQCs), are promising tools to achieve quantum advantage for optimization problems on near-term quantum devices. Their PQCs have been conventionally constructed from parametr
Externí odkaz:
http://arxiv.org/abs/2104.14875
Autor:
Kaminishi, Eriko, Mori, Takashi
Publikováno v:
Phys. Rev. A 100, 013606 (2019)
Quantum systems exhibit recurrence phenomena after equilibration, but it is a difficult task to evaluate the recurrence time of a quantum system because it drastically increases as the system size increases (usually double-exponential in the number o
Externí odkaz:
http://arxiv.org/abs/1811.11995
Dark soliton solutions in the one-dimensional classical nonlinear Schr\"odinger equation has been considered to be related to the yrast states corresponding to the type-II excitations in the Lieb-Liniger model. However, the relation is nontrivial and
Externí odkaz:
http://arxiv.org/abs/1811.00211
Publikováno v:
J. Phys. B 51, 112001 (2018)
The approach to thermal equilibrium, or thermalization, in isolated quantum systems is among the most fundamental problems in statistical physics. Recent theoretical studies have revealed that thermalization in isolated quantum systems has several re
Externí odkaz:
http://arxiv.org/abs/1712.08790
Publikováno v:
Phys. Rev. A 97, 013622 (2018)
Prethermalization refers to the relaxation to a quasi-stationary state before reaching thermal equilibrium. Recently, it is found that not only local conserved quantities but also entanglement plays a key role in a special type of prethermalization,
Externí odkaz:
http://arxiv.org/abs/1708.02404
Publikováno v:
Phys. Rev. E 95, 022129 (2017)
Entanglement pre-thermalization (EP) is a quasi-stationary nonequilibrium state of a composite system in which each individual subsystem looks thermal but the entire system remains nonthermal due to quantum entanglement between subsystems. We theoret
Externí odkaz:
http://arxiv.org/abs/1611.02900
Publikováno v:
New J. Phys. 18 (2016) 075008
We present a series of quantum states that are characterized by dark solitons of the nonlinear Schr\"{o}dinger equation (i.e. the Gross-Pitaevskii equation) for the one-dimensional (1D) Bose gas interacting through the repulsive delta-function potent
Externí odkaz:
http://arxiv.org/abs/1602.08329