The Wigner function and phase properties of superposition of two coherent states with the vacuum state

作     者：王月媛 王继成 刘树田 

作者机构：Department of PhysicsHarbin Institute of Technology Key Laboratory for Advanced Functional Materials and Excited State Process of Heilongjiang ProvinceSchool of Physics and Electronic EngineeringHarbin Normal University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2010年第19卷第7期

页      面：268-275页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10674038 and 10974039) the National Basic Research Program of China (Grant No. 2006CB302901) 

主　　题：coherent states vacuum state Wigner distribution function phase properties 

摘      要：This paper discusses some statistical properties of the superposition of two coherent states with a vacuum state, such as sub-Poissonian photon statistics and negativity of the Wigner function. Phase probability distribution and phase variance are calculated. Special cases of the constructed superposition states are presented. The results show that depending on the vacuum state coefficient γ and the coherent state coefficient a, it can generate a variety of nonclassical states.