V型三能级原子与非经典光场作用中光场特性的变化  

Properties of Field in the Interaction Between V-type Three Level Atoms and Nonclassical Light

作　　者：冯志芳[1] 李秀平[1] 

机构地区：[1]山西大学物理电子工程学院

出　　处：《量子光学学报》2006年第1期25-30,共6页Journal of Quantum Optics

基　　金：国家自然科学基金(批准号10374062);山西省留学基金

摘　　要：研究了V型三能级原子BEC与双模压缩光场相互作用系统中,忽略原子间相互作用和考虑原子间相互作用时光场的正交压缩和光子数压缩。结果表明,光场的正交压缩依赖于压缩参数,而光子数压缩与压缩参数、光场信号强度有关,在一定条件下,两种压缩可同时存在。原子间相互作用影响两种压缩的涨落随时间变化的周期,以及正交分量涨落随时间变化的幅度,而对光子数压缩涨落随时间变化的幅度几乎无影响。When neglecting and considering the interaction between atoms, the quadrature squeezing and the photonnumber squeezing of Bose-Einstein Condensate of V-type three level atoms interacting with two-mode squeezed light field are studied. The results show that the quadrature squeezing dependent on squeezing parameter and the photon-number squeezing is closely correlated to squeezing parameter and light field intensity. It is found that the two kinds of squeezing can be obtained at some conditions, and the interaction between atoms in BEC changes the period of fluctuation of light field and the amplitude of fluctuation of quadrature component. However, such atom-atom interaction does not affect the amplitude of fluctuation of photon-number squeezing.

关 键 词：玻色-爱因斯坦凝聚体 V型三能级原子 双模压缩光场 正交压缩 光子数压缩 

分 类 号：O431[机械工程—光学工程]