Entanglement Dynamics of Two Atoms in a Double Damping Jaynes-Cummings System  

作　　者：Zhi-Jian Li Jing Zhang Feng-Xian Huang Li-Li Cao Zhong-Wen Han 李志坚;张静;黄凤仙;曹丽丽;韩忠文(North University of China,Shuozhou 036000,China;College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]North University of China, Shuozhou 036000, China [2]College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China

出　　处：《Communications in Theoretical Physics》2018年第10期477-484,共8页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11504218;the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices No.KF201704

摘　　要：The entanglement between two stationary qubits is a kind of valuable quantum resources in quantum information or quantum network. This paper investigates the time evolution of the entanglement between two atoms,which are initially prepared in the Bell states and each of which interacts with its own cavity field in the identical and non-identical double damping Jaynes-Cummings(J-C) system. It mainly considers the effect of the atomic spontaneous decay Γ and the decay of cavity field κ on the two-qubit entanglement in such system. While causing the decay of entanglement, Γ and κ can also play a positive role in the entanglement evolution, which may imply a way to better control and maintain the entanglement. What is more, the rules governing the transfer of entanglement between two-qubit subsystems in strong coupling regime are finally studied by taking Γ and κ into consideration.

关 键 词：ENTANGLEMENT CONCURRENCE DETUNING DECAY 

分 类 号：O413[理学—理论物理] O562[理学—物理]