摘要
在一个Y型四能级系统中,理论研究了由外加耦合光场产生的4种缀饰效应(单缀饰、并联双缀饰、级联双缀饰和嵌套双缀饰)对探测场透射(PT)信号和四波混频(FWM)信号的影响,以及由于耦合光场的空间配置发生变化而引起的相位改变对这两个信号的影响。数值模拟结果表明,当改变探测场失谐或者改变耦合场的相对相位时,PT信号和FWM信号均可以实现明态和暗态这两种量子效应之间的相互转换。这种由失谐或相位控制的明暗态转换在光通信、量子信息处理以及光电器件中具有潜在的应用价值。
The influence on the probe transmission（PT） and four-wave mixing（FWM） signals in a Y-type four-level system is theoretically studied, which is induced by the four kinds of dressing effect（singly-dressed and parallel-,sequential-, nested- doubly-dressed） of the coupling field. Moreover, the changed relative phase induced by the changed configuration of the coupling field also influences the signals. Numerical simulation results show that the transition between the two quantum effects of bright and dark states in PT and FWM signals can be achieved by the changed probe field detuning or the changed relative phase. Such detuning or phase controlled transition has potential applications in optical communication, quantum information processing and optoelectronic devices.
出处
《激光与光电子学进展》
CSCD
北大核心
2015年第5期177-184,共8页
Laser & Optoelectronics Progress
基金
河南省高等学校重点科研项目(15A140028)
洛阳理工学院高层次人才科研启动基金(2014BZ10)
关键词
非线性光学
明暗态转换
数值模拟
四波混频
缀饰效应
nonlinear optics
transition between bright and dark states
numerical simulation
four-wave mixing
dressing effect
