Entropy variances of pure coherent states in the diffusion channel  

作　　者：Wei-Feng Wu Yong Fang Peng Fu 吴卫锋;方勇;付鹏(School of Mechanical and Electrical Engineering,Chizhou University,Chizhou 247000,China;Anhui Research Center of Semiconductor Industry Generic Technology,Chizhou 247000,China)

机构地区：[1]School of Mechanical and Electrical Engineering,Chizhou University,Chizhou 247000,China [2]Anhui Research Center of Semiconductor Industry Generic Technology,Chizhou 247000,China

出　　处：《Chinese Physics B》2024年第9期384-388,共5页中国物理B（英文版）

基　　金：Collaborative Innovation Project of University,Anhui Province(Grant No.GXXT-2022-088).

摘　　要：Using the operator correspondence of the real and fictious modes in the thermo entangled state representation, wesolve the quantum master equation describing the diffusion channel and obtain the Kraus operator-sum representation ofits analytical solution. we find that the pure coherent states evolve into the new mixed thermal superposed states in thediffusion channel. Also, we investigate the statistical properties of the initial coherent states and their entropy evolutions inthe diffusion channel, and find that the entropy evolutions are only related to the decay time and without the amplitudes ofthe initial coherent states.

关 键 词：entangled state representation diffusion channel coherent state entropy evolution 

分 类 号：O413[理学—理论物理]