Запутанные состояния поля по квадратурным амплитудам в процессе невырожденного параметрического распада в оптическом резонаторе

Abstract

For the process of nondegenerate parametric decay in an optical cavity, where a photon with energy ħω3 decays into two photons with energies ħω2 and ħω1 , where ħω3 = ħω2 +ħω1, the possibility of forming entangled field states of the interacting modes of the optical system based on the variable of quadrature amplitudes is studied. It is shown that strongly entangled states are obtained between the modes with the frequencies ω2 and ω1 in the case of a very strong coupling of the interacting modes. Weakly entangled states are formed in the case of strong coupling between modes, and no entanglement of these modes occurs in the case of weak coupling. Entangled states by the variable of quadrature amplitude do not form for the modes with frequencies ω3 and ω1 , in the optical system.