SPONTANEOUS EMISSION IN A CAVITY DRIVEN BY A STRONG BICHROMATIC FIELD

We present a theoretical treatment of the problem of a Rydberg atom near-resonantly coupled to a mode in a microwave cavity. We analyze the properties of cavity-induced spontaneous emission in the case of the cavity being driven by one or two near-resonant microwave fields. We find that the spontaneous emission of the atom can be turned off by one strong field (dynamical suppression) and that the addition of a second strong field can break this dynamical suppression and allow the atom to fluoresce in the presence of both fields. The analysis is cast both in a full master-equation treatment and in a Floquet treatment of an atom driven bichromatically in vacuum, the latter allowing for an interpretation of the full calculation. The calculations are performed in the intermediately strong coupling limit, in which both atomic and cavity dynamics must be considered.