叠加激发相干态的Wigner函数  

Wigner function of superposition of the excited coherent states

作　　者：江俊勤[1] 

机构地区：[1]广东教育学院物理系,广东广州510303

出　　处：《量子电子学报》2010年第2期193-197,共5页Chinese Journal of Quantum Electronics

摘　　要：构造了叠加激发相干态C(a^(+m)|α>+e^(iθ)a^(+m)|-α)),用数值计算的方法研究了θ和m对该量子态Wigner函数及其边缘分布的影响。结果表明:不论θ为何值,叠加激发相干态都能够呈现非经典性质,而且Wigner函数及其边缘分布明显受到θ和m的调节。The superposition state C（a^（＋m）｜α〉＋e^（iθ）α^（＋m）｜-α〉） from the excited coherent state was constructed. Dependences of Wigner function onθand m and its marginal distributions for the superposition state were numerically investigated.It is shown that the superposition state is always able to exhibit the non-classical properties for anyθ,Wigner function and its marginal distributions evidently depend onθand m.

关 键 词：量子光学 激发相干态 叠加态 WIGNER函数 边缘分布 

分 类 号：O431.2[机械工程—光学工程]