Effect of entanglement embedded in environment on quantum non-Markovianity based on collision model

作     者：Xiao-Ming Li Yong-Xu Chen Yun-Jie Xia Zhong-Xiao Man 李晓明;陈勇旭;夏云杰;满忠晓

作者机构：School of Physics and Physical EngineeringShandong Provincial Key Laboratory of Laser Polarization and Information TechnologyQufu Normal UniversityQufu273165China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2021年第73卷第5期

页      面：46-53页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation(China)under Grant No.61675115 and No.11974209 Taishan Scholar Project of Shandong Province(China)under Grant No.tsqn201812059 Shandong Provincial Natural Science Foundation(China)under Grant No.ZR2016JL005 

主　　题：collision model entanglement non-Markovianity 

摘      要：By means of collision models(CMs)where the environment is simulated by a collection of ancillas consisting of two entangled qubits,we investigate the effects of entanglement in the environment on the non-Markovianity of an open quantum *** CMs are considered in this study,in the first one the open quantum system S directly collides with the environment,while in the second one the system interacts with two intermediate qubits which,in turn,are coupled to the *** show that it is possible to enhance the non-Markovianity by environment entanglement in both *** particular,in the second model,we show that the initial state of the auxiliary qubits can also affect the non-Markovianity of the system and there exists the optimal combination of the initial environmental state and the initial state of auxiliary *** this case,the non-Markovianity can be greatly enhanced.