三能级原子-光力腔耦合非互易传输研究

Nonreciprocal transmission in a three-level atom-optomechanical cavity coupled system

文章利用三能级原子与光力腔耦合系统中的光力相互作用,以及光与原子的相互作用,提出一种可实现非互易传输的方案,同时分析了有效光力耦合强度和原子–腔模耦合强度对非互易传输和隔离度的影响.结果表明:通过适当调节有效光力耦合强度和原子–腔模耦合强度,可以调控光学光子的传输特性,且隔离度的峰值和线宽随着2种耦合强度的增加而增加.研究结果可为光学环形器、隔离器等非互易器件的研发提供参考.

A scheme for practical and nonreciprocal transmission is proposed using optomechanical and light-atom interaction in the coupling system of a three-level atom-optomechanical cavity,as well as the effects of the effective optomechanical coupling strength and atom-cavity-mode coupling strength on nonreciprocal transmission and isolation are analyzed.The results demonstrate that the transmission properties of optical photon can be modulated by properly adjusting the effective optomechanical coupling strength and atom-cavity-mode coupling strength.Moreover,the peak and line width of the isolation both increase with the increasing of the two coupling strengths.This scheme can provide useful references for the developments of nonreciprocal devices,such as,optical circulator,isolators,.