Field correlations and effective two-level atom-cavity systems
S. Rebić, A. S. Parkins, S. M. Tan · Physical Review A · 2004
We analyze the properties of the second-order correlation functions of the electromagnetic field in atom-cavity systems that approximate two-level systems. It is shown that a recently developed polariton formalism can be used to account for all the properties of the correlations, if the analysis is extended to include two manifolds---corresponding to the ground state and the states excited by a single photon---rather than just two levels.