用叠加相干态腔场控制纠缠原子的偶极压缩

Controlling dipole squeezing of entangled atoms via superposition coherent state field

考虑初始处于EPR态的两个二能级原子A、B,将B原子注入处于叠加相干态的腔中,演化一段时间后,对B原子进行选择性测量。通过计算分析得出了光场强度和相干态的叠加系数对原子A偶极矩影响的规律,发现在一定条件下可使与光场没有直接相互作用的原子偶极矩产生压缩。

Considering two two-level atoms （A and B） initially in the EPR state, atom B is put into one cavity prepared in coherent superposition state. When atom B flies out of the cavity, an arbitrary state measurement is carried out on it. The law about the effects on the dipole of atoms A exerted by light field intensity and superposition coefficients is obtained, and the result also shows that the dipole squeezing of atoms A can be achieved under certain conditions.