叠加激发双模SU(2)相干态的量子统计特性  

Quantum Statistical Properties of the Superposition of Excited SU(2) Coherent States

作　　者：黄纯青[1] 韩定安[1] 万广仁[1] 路洪[1] 汤俊杰[1] 

机构地区：[1]佛山科学技术学院光电子与物理学系

出　　处：《量子光学学报》2009年第2期110-115,共6页Journal of Quantum Optics

基　　金：国家自然科学基金博士启动基金(10547108)

摘　　要：构造了叠加激发双模SU(2)相干态|ψ>=Cm(|M,;ξm>+ei|M,ξ*;m>),用数值方法研究它的量子统计特性。结果表明:叠加激发双模SU(2)相干态两场模的光子统计分布保持反关联特征,而且呈现奇特的光放大特性;b模光场的亚泊松分布得到比较大的加强,而a模光场的亚泊松分布特性则有轻微减弱;两场模的反聚束性均得到增强;随激发量子数m的增大,两场模间的反关联性减弱。The superposition of excited double-mode SU （2） coherent state ｜ψ〉=Cm（｜M, ξm〉＋ei｜M,ξ＊ m〉） is constructed and its quantum statistical properties are investigated with numeric method. The results exhibit that when the photons are added to the mode b of the double mode SU （2） coherent state, the two field modes can preserve anti-relation character, and presents a special effect of light amplification; the subPoissonian photon statistics properties of mode b is obvious enhanced and that of mode a is slightly weakened ; anti-bunching effect of two modes of field are all enhanced, but as the quantum number of excitation m is increased, the anti-relation character of the two modes of field is weakened.

关 键 词：叠加激发双模SU(2)相干态 数值方法 量子统计特性 

分 类 号：O431[机械工程—光学工程]