Unitary transformation and the dynamics of a three-level atom interacting with two quantized field modes
Moorad Alexanian, Subir Kumar Bose · Physical Review A · 1995
Starting from a three-level atom coupled to two modes of radiation field, we derive a Raman-coupled Hamiltonian by a unitary transformation, evaluated perturbatively in coupling constants. The Rabi oscillation frequency and the collapse and revival times of the atomic coherence are found to have strikingly different photon-intensity dependence than those found previously.