Two-photon Jaynes-Cummings systems interacting with a classical field

If a two-level atom is in the two-photon resonance with a quantized mode an d simultaneously interacts with a quasi-resonance classical field, then a p hoton exchange is observed in this system between the quantized and classic al modes. It is demonstrated that such a physical system can serve as a sou rce of squeezed radiation in the quantized mode. The squeezing can be arbit rarily close to unity, while the radiation amplitude can be relatively larg e. A situation is discussed when N atoms are in the two-photon resonance wi th a quantized mode and simultaneously interact with a classical field. The phenomenon of exponential superradiation is described when the number of p hotons in the quantized mode exponentially depends on the number N of atoms . (C) 2001 MAIK "Nauka/Interperiodica".