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

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 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.

12 pages, 9 figures

References in corpus (6)

• Dark-State Polaritons in Electromagnetically Induced Transparency
• Measurement of conditional phase shifts for quantum logic
• Trapping of single atoms in cavity QED
• Photon-photon interactions in cavity electromagnetically induced transparency
• How to Trap Photons? Storing Single-Photon Quantum States in Collective Atomic Excitations
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• Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multi-state atoms
• Tunable Photon blockade with single atom in a cavity under electromagnetically induced transparency
• Applications of Coherent Population Transfer to Quantum Information Processing
• Single phonon source based on a giant acoustic nonlinear effect
• Field correlations and effective two level atom-cavity systems
• Nanofiber-based all-optical switches
• Quantum dynamics and breakdown of classical realism in nonlinear oscillators
• Wave packet Rabi oscillations from phase-space flow in mesoscopic cavity QED
• Mechanical engineering of photon blockades in a cavity optomechanical system