级联准Λ-型四能级系统电磁诱导透明特性

量子电子学报 , 2007, 24(5): 548-553. doi: 10.3969/j.issn.1007-5461.2007.05.005

级联准Λ-型四能级系统电磁诱导透明特性

张连水 ^1, , 庄仲红 ^2, , 李晓莉 ^3, , 杨丽君 ^4, , 冯晓敏 ^5,

1.河北大学物理科学与技术学院,河北,保定,071002

2.河北大学物理科学与技术学院,河北,保定,071002

3.河北大学物理科学与技术学院,河北,保定,071002

4.河北大学物理科学与技术学院,河北,保定,071002

5.河北大学物理科学与技术学院,河北,保定,071002

基金项目: 河北省自然科学基金(A2005000091) 河北省教育厅科研项目(2004103)

关键词：量子光学 , 电磁诱导透明 , 级联准Λ-型四能级系统 , 缀饰态

Electromagnetically induced transparency properties in the cascade quasi-Λ-four-level system

双场作用下的Λ-型三能级系统是研究电磁诱导透明(EIT)的基本模型,在此基础上,引入强微波驱动场作用于该系统的激发态能级与另一激发态能级间,就构成了三场作用下的级联准Λ-型四能级系统.通过求解系统的密度矩阵方程,分别研究了耦合场和微波驱动场对系统吸收特性的影响.在耦合场和微波驱动场共同作用下,系统的探测吸收谱呈现为Autler-Townes双峰与EIT的叠加,可以用缀饰态理论对此做出合理解释.研究结果表明,Autler-Townes双吸收峰来自于强微波场与系统的相互作用,EIT来源于耦合场与系统的量子相干相互作用.

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级联准Λ-型四能级系统电磁诱导透明特性

Electromagnetically induced transparency properties in the cascade quasi-Λ-four-level system

参考文献