Optimal entropy squeezing sudden generation and its control for an effective two-level moving atom entanglement with the two-mode coherent fields  

作　　者：刘小娟 周元俊 方卯发 

机构地区：[1]Department of Physics, Hunan University of Science and Technology [2]Department of Physics,Hunan Normal University [3]Department of Physics,Nanjing University

出　　处：《Chinese Physics B》2009年第6期2307-2313,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 19874020);the Natural Science Foundation of Hunan Province,China (Grant No 09JJ3012);the Scientific Research Fund of the Education Department of Hunan Province of China (Grant No 07c543)

摘　　要：From the viewpoint of quantum information, this paper proposes a concept and a definition of the atomic optimal entropy squeezing sudden generation （AOESSG） for the system of an effective two-level moving atom which entangles with the two-mode coherent fields. It also researches the relationship between the AOESSG and entanglement sudden death of the atom-fields, and discusses the influences of atomic initial state on the AOESSG and obtains the system parameter which controls the AOESSG.From the viewpoint of quantum information, this paper proposes a concept and a definition of the atomic optimal entropy squeezing sudden generation （AOESSG） for the system of an effective two-level moving atom which entangles with the two-mode coherent fields. It also researches the relationship between the AOESSG and entanglement sudden death of the atom-fields, and discusses the influences of atomic initial state on the AOESSG and obtains the system parameter which controls the AOESSG.

关 键 词：optical entropy squeezing sudden generation effective two-level moving atom entanglement sudden death 

分 类 号：O431.2[机械工程—光学工程] O562[理学—光学]