Joint Wigner function for atom - field interactions
Attila Czirják, M. G. Benedict · Quantum and Semiclassical Optics Journal of the European Optical Society Part B · 1996
We define a joint Wigner function to give a fully phase space description for the interacting system of the quantized electromagnetic field and two-level atoms. We give its equation of motion in the single-atom case using the Jaynes - Cummings model for the interaction.