SU(1, 1) and SU(2) Squeezing in Trilinear Optical Processes
Igor Jex, G. Drobný · Journal of Modern Optics · 1992
The squeezing properties in terms of SU(1, 1) and SU(2) operators for the case of trilinear processes are studied. The initial state of the system is supposed to be a coherent state in one of the modes and number states in the remaining modes. It is pointed out that in several cases a considerable amount of squeezing can be achieved. Due to the common mathematical structure the case of a two-mode coupler with intensity dependent coupling is also analysed.