Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Yamashika, Shion"'
We study the non-equilibrium dynamics of bosons in a two-dimensional optical lattice after a sudden quench from the superfluid phase to the free-boson regime. The initial superfluid state is described approximately using both the Bogoliubov theory an
Externí odkaz:
http://arxiv.org/abs/2410.14299
Publikováno v:
Phys. Rev. B 110, 085126 (2024)
The quantum Mpemba effect is the counter-intuitive non-equilibrium phenomenon wherein the dynamic restoration of a broken symmetry occurs more rapidly when the initial state exhibits a higher degree of symmetry breaking. The effect has been recently
Externí odkaz:
http://arxiv.org/abs/2403.04486
We study the time evolution of the R\'enyi entanglement entropies following a quantum quench in a two-dimensional (2D) free-fermion system. By employing dimensional reduction, we effectively transform the 2D problem into decoupled chains, a technique
Externí odkaz:
http://arxiv.org/abs/2310.18160
Graph states are entangled states useful for several quantum information processing tasks such as measurement-based quantum computation and quantum metrology. As the size of graph states realized in experiments increases, it becomes more essential to
Externí odkaz:
http://arxiv.org/abs/2304.10952
Publikováno v:
Phys. Rev. Research 5, 043102 (2023)
We investigate the time evolution of the second-order R\'enyi entropy (RE) for bosons in a one-dimensional optical lattice following a sudden quench of the hopping amplitude $J$. Specifically, we examine systems that are quenched into the strongly co
Externí odkaz:
http://arxiv.org/abs/2209.13340
Autor:
Kagamihara, Daichi, Kaneko, Ryui, Yamashika, Shion, Sugiyama, Kota, Yoshii, Ryosuke, Tsuchiya, Shunji, Danshita, Ippei
We investigate the time-dependent R\'{e}nyi entanglement entropy after a quantum quench starting from the Mott-insulating and charge-density-wave states in a one-dimensional free boson system. The second R\'{e}nyi entanglement entropy is found to be
Externí odkaz:
http://arxiv.org/abs/2207.08353
Publikováno v:
Phys. Rev. A 103, 043305 (2021)
We study collective modes and superfluidity of spin-1 bosons with antiferromagnetic interactions in an optical lattice based on the time-dependent Ginzburg-Landau (TDGL) equation derived from the spin-1 Bose-Hubbard model. Specifically, we examine th
Externí odkaz:
http://arxiv.org/abs/2012.02501
We study dynamics of entanglement in the thermalization process of an isolated quantum many-body system. We propose a simple setup for measuring the propagation speed of entanglement entropy (EE) in numerical simulations and apply it to the integrabl
Externí odkaz:
http://arxiv.org/abs/2003.10106
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