Role of fluctuations in nonlinear dynamics of driven polariton system in semiconductor microcavities

The escape time from the lower energy state of the bistable nonlinear driven microcavity oscillator have been obtained analitically by means of quasiclassical kinetic equation in the basis of quasienergy states. The dependence of the escape time on the intensity of the external field is in rather good agreement with the results of numerical experiments. Moreover, the numerical dependencies of escape time on damping parameter reveal smooth crossover from exponential to diffusive like behavior.