Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields  

作　　者：周并举 刘一曼 赵明卓 刘小娟 

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

出　　处：《Chinese Physics B》2010年第12期278-284,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 of China (Grant Nos. 09JJ3012 and 10JJ9002);the Research Foundation of Education Bureau of Hunan Province of China (Grant No. 10A032)

摘　　要：From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states （AOESS） for a moving two-level atom under control of the two-mode squeezing vacuum fields. Necessary conditions of preparation of the AOESS are analysed, and numerical verification of the AOESS is finished. It shows that the AOESS can be prepared by controlling the time of the atom interaction with the field, cutting the entanglement between the atom and field, and adjusting squeezing factor of the field. An atomic optimal entropy squeezing sudden generation in different components can alternately be realized by controlling the field-mode structure parameter.From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states （AOESS） for a moving two-level atom under control of the two-mode squeezing vacuum fields. Necessary conditions of preparation of the AOESS are analysed, and numerical verification of the AOESS is finished. It shows that the AOESS can be prepared by controlling the time of the atom interaction with the field, cutting the entanglement between the atom and field, and adjusting squeezing factor of the field. An atomic optimal entropy squeezing sudden generation in different components can alternately be realized by controlling the field-mode structure parameter.

关 键 词：atomic optimal entropy squeezing state squeezing factor of the field the field-mode structure parameter 

分 类 号：O431.2[机械工程—光学工程] O431[理学—光学]