玻色-爱因斯坦凝聚原子与Schrdinger猫态相互作用系统中的压缩特性

Squeezing properties of Schrdinger cat states field interacting with atomic Bose-Einstein condensate

利用全量子理论,研究了玻色-爱因斯坦凝聚原子与Schrdinger猫态相互作用系统中,光场和原子激光的压缩特性。结果表明:在系统中,偶相干态、奇相态分别与玻色-爱因斯坦凝聚原子相互作用,偶相干态、奇相态光场和原子激光均不呈现压缩效应。而Yurke-Stoler相干态光场和原子激光呈现压缩效应。在强场(|α|=1)情况下,三种不同光场的两种压缩现象均不产生。光场和原子激光的压缩特性主要受初始光强和耦合常数的影响。

The squeezing properties of the Schrodinger cat states field interacting with Bose-Einstein condensate of two-level atom are studied by means of quantum theory. The results show that the optical field and the atomic laser of even coherent state and odd coherent state interacting with Bose-Einstein condensate appear no squeezing effects, whereas the optical fields and the atomic laser of Yurke-Stoler coherent state show squeezing effects. The intensity of the initial light field and values of the coupling constant have the influences on the squeezing properties of the field and atomic laser.