腔外原子选择测量对腔内原子量子性质的调控

Controlling the Quantum Properties of Atom inside A Cavity via Manipulating An Atom outside the Cavity

考虑了2个初始处于纠缠态的级联三能级原子,将其中一个原子注入高Q腔中与单模压缩真空场发生共振相互作用。利用全量子理论和数值计算方法研究了腔外原子的选择测量对腔内原子偶极振幅平方压缩的影响。结果表明,通过对腔外原子进行选择性测量,可调控腔内原子的偶极振幅平方压缩。

By considering two cascade three-level atom initially in the entanglement state,one atom is poured into a highQ cavity and is interacted with a single-mode squeezed vacuum field.The influence of selective measurement on the dipole amplitude-squared squeezing of an atom inside the cavity is investigated by means of full quantum theory and numerical calculations.The result shows that the dipole amplitude-squared squeezing of an atom inside the cavity can be controlled through selective atomic measurement of atom outside the cavity.