相干态光场与两纠缠原子相互作用过程中光场的压缩效应

Light squeezing in the system of coherent state interacting with two identical two-level atoms

采用时间演化算符和数值计算方法研究了两全同二能级纠缠原子与相干光场相互作用过程中光场的压缩效应。结果表明:两原子不是在任一纠缠态下,光场都会被压缩,光场压缩与两原子体系纠缠度有关联。在某一特定时刻,对于特定的光子数而言,在任一纠缠态下,光场可以完全被压缩。

The squeezing properties in the system of the coherent optical field interacting with two identical two-level atoms are studied via time evolution operator and numerical method . The results indicate that the squeezing of optical field depends on the degree of entanglement of two identical atoms. At certain particular time, for some special numbers of photons, optical field can be squeezed entirely in any entangled state of two atoms. In some cases, the optical fields can not be squeezed.