对腔外的原子的操作控制腔内原子的发射性质

考虑两个全同的处在非最大纠缠态的双能级原子,将其中一个与共振的真空腔场相互作用.当对腔外的原子进行旋转和测量操作时,腔场的压缩性质就会发生改变,不同的旋转角度将会引起不同的压缩效应,而且原子的纠缠度也将影响腔场的压缩性质.但对于任意的纠缠度,都可以对腔外原子选择适当的旋转角度,使得腔场获得最强的压缩效应.这一结论还被推广到了双模压缩的情形.

Emission properties of atoms inside a cavity when manipulating the atoms outside the cavity

Considering two two-level atoms initially in the non-maximally entangled state, one of them is put into an initially empty cavity and resonant interaction occurs. It is shown that the emission properties of the atom inside the cavity will be affected when the other atom outside the cavity is manipulated. And the degree of entanglement of the atoms can also affect the emission properties. This conclusion is generalized to the situation of the two-mode squeezed property of two cavities interacting with three two-level atoms.