Polariton analysis of a four-level atom strongly coupled to a cavity mode
- 18 March 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 65 (4) , 043806
- https://doi.org/10.1103/physreva.65.043806
Abstract
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.Keywords
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