Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs  

作　　者：DING Bang-Fu WANG Xiao-Yun LIU Jing-Feng YAN Lin ZHAO He-Ping 丁邦福;王小云;刘景峰;颜林;赵鹤平(College of Physical Science and Information Engineering,Jishou University,Jishou 416000;Colleges of Science,South China Agriculture University,Guangzhou 510642)

机构地区：[1]College of Physical Science and Information Engineering,Jishou University,Jishou 416000 [2]Colleges of Science,South China Agriculture University,Guangzhou 510642

出　　处：《Chinese Physics Letters》2011年第10期130-133,共4页中国物理快报（英文版）

基　　金：Supported by the Natural Science Foundation of Hunan Province under Grant No.09JJ6011;the Natural Science Foundation of Education Department of Hunan Province under Grant No.07C528.

摘　　要：The quantum discord dynamics of two non-coupled two-level atoms independently interacting with their reservoir is studied under two kinds of non-Markovian conditions,namely,an off-resonant case with atomic transition frequency and a photonic band gap.In the first case,the phenomenon of the quantum discord loss and the oscillatory behavior of the quantum discord can occur by changing the detuning quantity and reducing the spectral coupling width for any initial Bell state.Under the second condition,the trapping phenomenon of the quantum discord can be presented by adjusting the width of gap,that is,the quantum discord of two atoms keep a nonzero constant for a long time.

关 键 词：STATE QUANTUM Markovian 

分 类 号：O41[理学—理论物理]