激光与光电子学进展, 2010, 47 (5): 052701, 网络出版: 2010-04-27
双强耦合场驱动下的探测吸收光谱
Probing Absorption Spectrum Driven by Two Strong Coupling Fields
量子相干 电磁诱导透明 L型三能级系统 双耦合场 quantum coherence electromagnetically induced transparency L -three-level scheme two coupling fields
摘要
在具有耦合-探测结构的L 型三能级系统中引入另一强耦合场,形成双强耦合场作用下的L 型三能级系统。通过求解系统的密度矩阵方程,研究了探测吸收谱的特性。结果表明,当两个耦合场的拉比频率相等,一个共振作用于跃迁能级而另一个以一定的失谐量作用于跃迁能级时,系统的探测吸收谱呈现出多峰,即多个Aulter-Townes双峰结构。给出了吸收峰的位置与耦合场的作用强度和频率失谐量之间的定量关系,并用缀饰态作出准确的解释。
Abstract
A coupling field is introduced into the L -three-level scheme driven by a coupling field and a probe field,and then the L -three-level scheme is driven by two coupling fields. The probing absorption spectrum is researched in theory by solving the density matrix equation of motion. The spectrum is characterized by a series of doublets when the Rabi frequencies of the two coupling fields are equal where one coupling field is exactly resonant with the transition and the other is detuning with the transition. The positions of peaks are dicussed. These situation is interpreted well by dressed states.
杨丽君, 赵敏, 张连水, 曲宇宁. 双强耦合场驱动下的探测吸收光谱[J]. 激光与光电子学进展, 2010, 47(5): 052701. Yang Lijun, Zhao Min, Zhang Lianshui, Qu Yuning. Probing Absorption Spectrum Driven by Two Strong Coupling Fields[J]. Laser & Optoelectronics Progress, 2010, 47(5): 052701.