双模耗散腔中原子-光子纠缠的制备

Preparation of Atom-Photon Entanglement in a Bimodal Dissipative Cavity

考虑处于双模耗散腔中的一个Λ型三能级原子,由于耗散腔场受外界噪声场驱动,使得系统产生原子-光子纠缠态.进一步分析噪声对该纠缠的影响以及纠缠的演化,并进行数值模拟.研究结果显示,当双模腔场均受外界噪声场驱动时,系统将产生稳态纠缠.噪声可以在纠缠制备过程中发挥积极作用.

A Λ-type three-level atom in a bimodal dissipative cavity may generate an atom-photon entangled state driven by an external noise cavity .Then we analyze the effect of noise intensity on the entanglement as well as the evolution of the entanglement .Furthermore ,we numerically simulate the evolution of the atom-photon entanglement .The result shows there is a steady-state entanglement when the bimodal cavity is driven by an external noise .The research highlights that noise may play a positive role in entanglement creation .