Steady and optimal entropy squeezing for three types of moving three-level atoms coupled with a single-mode coherent field  

作　　者：Wen-Jin Huang Mao-Fa Fang 黄文进;方卯发(Synergetic Innovation Center for Quantum Effects and Applications,Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education,School of Physics and Electronics,Hunan Normal University,Changsha 410081,China)

机构地区：[1]Synergetic Innovation Center for Quantum Effects and Applications,Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education,School of Physics and Electronics,Hunan Normal University,Changsha 410081,China

出　　处：《Chinese Physics B》2021年第1期164-169,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 12064012 and 11374096)。

摘　　要：The entropy squeezing properties of different types of moving three-level atoms coupled with a single-mode coherent field are studied. The influences of the moving velocity and initial states of the three-level atom on the entropy squeezing are discussed. The results show that, the entropy squeezing properties of the three-level atom depend on its initial state, moving velocity, and the type. A stationary three-level atom can not obtain a steady entropy squeezing whatever initial conditions are chosen, while a moving three-level atom can achieve a steady and optimal entropy squeezing through choosing higher velocity and appropriate initial state. Our result provides a simple method for preparing squeezing resources with ultra-low quantum noise of the three-level atomic system without additional any complex techniques.

关 键 词：entropy squeezing moving three-level atom single-mode coherent field 

分 类 号：O562[理学—原子与分子物理] O413[理学—物理]