Coherence-Enhanced Entanglement Induced by a Two-Mode Thermal Field  

作　　者：胡要花 方卯发 

机构地区：[1]physics and Information Engineering College,Luoyang Normal College [2]Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University [3]Department of Physics,Hunan Normal University

出　　处：《Communications in Theoretical Physics》2010年第9期421-426,共6页理论物理通讯（英文版）

基　　金：Supported by the Young Scientists Fund of the National Natural Science Foundation of China under Grant No.10905028;the Program for Science and Technology Department of Henan Province of China under Grant No.102300410050;the Opening Project of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control (Hunan Normal University),Ministry of Education under Grant No.QSQC1003;by the Cultivation Fund of Luoyang Normal College under Grant No.10000854

摘　　要：Considering two identical two-level atoms interacting with two mode thermal field through a nondegeratetwo-photon process,we study the entanglement dynamics between two atoms when the atomic coherence exists.It showsthat the entanglement is dependent on the initial atomic states,and is greatly enhanced due to atomic coherence ascompared with the case when the atomic coherence is ignored.The results also show that the entanglement can becontrolled by changing the relative phases and the amplitudes of the polarized atoms.

关 键 词：ENTANGLEMENT COHERENCE two-mode thermal field 

分 类 号：O431.2[机械工程—光学工程] O153.3[理学—光学]