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Quantum dynamics of dissipative Chern insulator (2404.11466v2)

Published 17 Apr 2024 in quant-ph

Abstract: For open quantum systems,a short-time evolution is usually well described by the effective non-Hermitian Hamiltonians,while long-time dynamics requires the Lindblad master equation,in which the Liouvillian superoperators characterize the time evolution. In this paper, we constructed an open system by adding suitable gain and loss operators to the Chen insulator to investigate the time evolution of quantum states at long times by numerical simulations.Finally,we also propose a topolectrical circuits to realize the dissipative system for experimental observation. It is found found that the opening and closing of the Liouvillian gap leads to different damping behaviours of the system and that the presence of non-Hermitian skin effects leads to a phenomenon of chiral damping with sharp wavefronts.Our study deepens the understanding of quantum dynamics of dissipative system.

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Authors (2)

  1. Jilian Zhong
  2. Xiaoyue Li

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