对双模反关联光场非经典特性的远程控制

考虑初始处于纠缠态的两个V型三能级原子之一注入腔场中,并且与初始处于SU(2)相干态的双模场发生共振相互作用的情况。采用数值计算方法研究了双模关联场的非经典特性。讨论了对腔外原子选择性测量、双模总光子数和配分参量对双模关联场的差压缩、柯西-施瓦茨(Cauchy-Schwarz)不等式、模间相干性以及光子亚泊松(sub-Poisson)分布的影响。研究结果表明:对腔外原子的选择性测量或增加两模的总光子数,a模的差压缩和光子sub-Poisson分布都明显地增强,但两模之间的反相关明显地减弱。

Remote Control of the Nonclassical Properties of Two-mode Anti-correlated Light Fields

We consider the case that one of the two initially entangled V-type three-level atoms is injected into a two-mode cavity and resonantly interacting with a two-mode field initially in a SU(2) coherent state. Nonclassical properties of the two-mode correlated field are investigated numerically. The influences of the state-selective measurement of the atom outside the cavity, the total photon number of the two modes, and the partition parameter on the difference squeezing, the Cauchy-Schwarz inequality, the mode-correlation properties, and the photon number distribution are discussed. The results indicate when the state-selective measurement is performed on the atom outside the cavity or the total photon number is increased, the difference squeezing and the