Quantum properties of the binomial state field interacting with a two-level atom  

作　　者：JIANG DaoLai,REN XueZao,CONG HongLu & LI Lei School of Science,Southwest University of Science and Technology,Mianyang 621010,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第5期864-869,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 1097602/A06)

摘　　要：By the method of coherent-state orthogonalization expansion,the atomic inversion and the anti-bunching effect in a two-level atomic system interacting with binomial state field are studied under the Jaynes-Cummings model without rotating wave approximation.The influence of the parameter and the detuning on the anti-bunching effect are discussed,and the anti-bunching effect is also discussed under the conditions of strong coupling.Our studies show that the second order coherence degrees are quite different between the situations of with and without-rotating wave approximation.For the latter when the detuning increases,the duration of the bunching effect increases at the beginning and then decreases,and finally the light field displays anti-bunching effect completely.By the method of coherent-state orthogonalization expansion,the atomic inversion and the anti-bunching effect in a two-level atomic system interacting with binomial state field are studied under the Jaynes-Cummings model without rotating wave approximation.The influence of the parameter and the detuning on the anti-bunching effect are discussed,and the anti-bunching effect is also discussed under the conditions of strong coupling.Our studies show that the second order coherence degrees are quite different between the situations of with and without-rotating wave approximation.For the latter when the detuning increases,the duration of the bunching effect increases at the beginning and then decreases,and finally the light field displays anti-bunching effect completely.

关 键 词：coherent STATE ORTHOGONALIZATION expansion BINOMIAL STATE field JAYNES-CUMMINGS model without-rotating wave approximation atomic inversion 

分 类 号：O431.2[机械工程—光学工程]