Polariton Analysis of a Four-Level Atom Strongly Coupled to a Cavity Mode

Details 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

2001-11-30

arxiv.org/abs/quant-ph/0111161v1

Physics

Quantum Physics

12 pages, 9 figures

Scientific paper

10.1103/PhysRevA.65.043806

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 EIT 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.

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