量子干涉对原子和光场间纠缠交换的影响

Effects of Quantum Interference on Entanglement Transfer

研究了双原子通过局域相互作用从双模关联场获得纠缠的规律,结果表明跃迁通道间的量子干涉使得双原子可获得的最大纠缠与原子和光场的初态相关。双原子获得纠缠的最大值对原子布居数的依赖关系呈现相位敏感性,在适当的条件下纠缠交换效率可明显提高。

We study the entanglement transfer from two-mode fields to a pair of atoms via local interaction. It proves that the achievable maximum entanglement of the two atoms is dependent on the initial state of the atoms and the two-mode fields due to the quantum interference between the different transition channels. The relationship between the achievable maximum entanglement and the atom population presents the phase sensitivity. Under proper conditions, the efficiency of entanglement transfer can be improved evidently.