Dynamics of properties of light field of non-resonance interaction between V-type three-level atom and a single mode via intensity-dependent coupling is studied by means of the quantum theory. The influences of initial average photon numbers and the detuning are discussed.
The evolution properties of the entropy of a single-mode light field interacting with the V-type three-level atom via intensity-dependent coupling have been studied. The discussion is centered on the influence of detuning and initial photon number on the field entropy evolution. The results show that the behavi or of the field entropy is non-periodic for the cases of small detuning and weak initial light field,being similar to the single-photon Jaynes-Cummings model (JCM). On the contrary,the field entropy evolution is periodic for the cases of large detuning or strong initial light field,being similar to the two-photon JCM
The time evolution of Light squeezing in the system of single-mode field interacting with V-type three-level atom via intensity-dependent coupling in Kerr medium is studied by means of the quantum theory.The effects of the coupling constant χ and the initial average photon numbers on the squeezing are discussed by the method of the numerical calculations.The result shows that Kerr effect has decreased the atomic dipole squeezing in various degrees the Proper initial average photon numbers be propitious to the squeezing of light.
The squeezing properties of light field interacting with the A-type three level atom via intensity-dependent coupling are studied and the influences of detuning between the atomic transition frequency and the light frequency in single-photon process and the initial squeezing of light on the light squeezing are discussed emphatically. The results show that both the detuning and the initial squeezing of light strongly influence the squeezing of field. The light squeezing remains continuous if the detuning is big enough, but if the detuning is little the light field will be squeezed periodically. The bigger the initial squeezing factor of light is, the deeper the light squeezing is.