Collective photon-atom states by Raman coupling inside a cavity: A dynamic field-mode approach
S. K. Y. Lee, C. K. Law · Physical Review A · 2007
We examine the collective quantum dynamics of photons and atoms driven by Raman transitions inside a low-$Q$ cavity. At short times, we show that most of the Stokes photons can be captured by a single time-varying field mode. We determine an approximate analytical form of the mode function and construct a single-mode effective Hamiltonian. The model allows us to address the structure of the photon-atom state explicitly. In particular, we indicate that photons and atoms exhibit a form of photon-atom squeezing during the initial stage of the evolution.