量子光学学报, 2009, 15 (2): 123, 网络出版: 2010-09-07
原子消相干对四能级EIT系统中非线性效应的影响
The Influence of Dephasing Rate on Nonlinearity in a Four-Level EIT System
Tripod型原子系统 交叉Kerr非线性效应 原子消相干速率 Tripod atomic system the cross-phase Kerr nonlinearity the dephasing rate
摘要
文章在理论上研究了原子消相干速率对Rb原子四能级Tripod系统中EIT增强的交叉Kerr非线性的影响。结果表明，交叉Kerr非线性效应随着原子消相干速率的减小而增大。当两基态之间消相干速率γ1从2.5 MHz减小到0.2 MHz时，交叉Kerr非线性折射率可增强一个数量级。
Abstract
We theoretically investigates the influences of dephasing rate on cross-Kerr nonlinearity (XPM) in the Four-level Tripod system. The results show that cross-Kerr nonlinearity become larger with the decreasing of the atomic dephasing rate. When the dephasing rate changes from 2.5 MHz to 0.2 MHz, the probe and trigger XPM coefficients will increase by one order of magnitude.
张春红, 杨旭东, 李淑静, 王海. 原子消相干对四能级EIT系统中非线性效应的影响[J]. 量子光学学报, 2009, 15(2): 123. ZHANG Chun-hong, YANG Xu-dong, LI Shu-jing, WANG Hai. The Influence of Dephasing Rate on Nonlinearity in a Four-Level EIT System[J]. Acta Sinica Quantum Optica, 2009, 15(2): 123.
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