压缩真空中原子系统的瞬时光学响应  

Transient optical response of an atomic system in squeezed vacuum

作　　者：曾志强[1,2] 王玉平[3] 侯邦品[4] 

机构地区：[1]宜宾学院计算物理四川省高校重点实验室,宜宾644000 [2]宜宾学院物理与电子工程学院,宜宾644000 [3]宜宾学院矿业与安全工程学院,宜宾644000 [4]四川师范大学物理与电子工程学院,成都610066

出　　处：《四川大学学报（自然科学版）》2012年第4期861-865,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省青年基金(09ZQ026-008);宜宾学院青年基金(2010Q46)

摘　　要：通过数值求解密度矩阵非对角元,研究了压缩真空对原子系统瞬时光学性质的影响.研究结果表明,原子系统的光谱振荡振幅、瞬时吸收和瞬时响应的时间都显著地依赖于压缩真空,但压缩真空与探测光的相对相位对吸收谱的稳态值没有影响.此外,可以通过调节压缩真空的平均光子数改变原子系统的粒子数布居.The effects of the squeezed vacuum on the transient optical properties in an atomic system are investigated by solving the non-diagonal density matrix element numerically. We find that the oscillatory amplitude of the optical spectra, the transient absorption,and the response time from the transient to the steady situation are strongly dependent on the squeezed vacuum. But the steady-state value of the ab- sorption spectrum is not affected by the relative phase between the squeezed vacuum and the probe field. Additionally, the population distribution can be modified due to the mean photon number of the squeezed vacuum.

关 键 词：量子光学 电磁感应透明 瞬时光学响应 压缩真空 

分 类 号：O431.2[机械工程—光学工程]