Polariton analysis of a four-level atom strongly coupled to a cavity mode
Polariton analysis of a four-level atom strongly coupled to a cavity mode
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DOI：
10.1103/physreva.65.043806
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发表时间：
2001-11
影响因子：
2.9
通讯作者：
S. Rebic;A. Parkins;S. Tan
中科院分区：
文献类型：
--
作者：
S. Rebic;A. Parkins;S. Tan
本文给出了在相干光场驱动下，与腔场模强耦合的单个四能级原子的完整解析解。四能级原子系统由一个电磁感应透明结构的三能级子系统，加上一个额外的原子能级组成;这个系统被预测会表现出光子阻塞效应。该解决方案提出的极化激元。从有效二能级系统的角度分析了由此得到的有效哈密顿量，并讨论了缀饰态的动态Stark分裂。分析了腔模出射光的荧光光谱，并确定了相关的跃迁。
We present a complete analytical solution for a single four-level atom strongly coupled to a cavity field mode and driven by external coherent laser fields. The four-level atomic system consists of a three-level subsystem in an electromagnetically induced transparency configuration, plus an additional atomic level; this system has been predicted to exhibit a photon blockade effect. The solution is presented in terms of polaritons. An effective Hamiltonian obtained by this procedure is analyzed from the viewpoint of an effective two-level system, and the dynamic Stark splitting of dressed states is discussed. The fluorescence spectrum of light exiting the cavity mode is analyzed and relevant transitions identified.