Quantum speed limit for the maximum coherent state under the squeezed environment  

作　　者：Kang-Ying Du Ya-Jie Ma Shao-Xiong Wu Chang-Shui Yu 杜康英;马雅洁;武少雄;于长水(School of Science,North University of China,Taiyuan 030051,China;School of Physics,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]School of Science,North University of China,Taiyuan 030051,China [2]School of Physics,Dalian University of Technology,Dalian 116024,China

出　　处：《Chinese Physics B》2021年第9期131-135,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11775040);the Scientific and Technological Innovation Program of the Higher Education Institutions of Shanxi Province,China(Grant No.2019L0527).

摘　　要：The quantum speed limit time for quantum system under squeezed environment is studied.We consider two typical models,the damped Jaynes-Cummings model and the dephasing model.For the damped Jaynes-Cummings model under squeezed environment,we find that the quantum speed limit time becomes larger with the squeezed parameter r increasing and indicates symmetry about the phase parameter valueθ=π.Meanwhile,the quantum speed limit time can also be influenced by the coupling strength between the system and environment.However,the quantum speed limit time for the dephasing model is determined by the dephasing rate and the boundary of acceleration region that interacting with vacuum reservoir can be broken when the squeezed environment parameters are appropriately chosen.

关 键 词：quantum speed limit squeezed reservoir Jaynes-Cummings model dephasing model 

分 类 号：O413[理学—理论物理]