<title>Quantum fluctuations of light at the output of a cavity with absorptive bistability for arbitrary input-photon statistics</title>

Abstract

The general expression of the output-light Mandel parameter out 5 obtained in case of purely absorptive bistability, for arbitrary value of of incident light (theparameter measures the deviation of the photon-flow statistics from Poisson statistics). Calculations are based on stochastic rate equations. No adiabatic elimination of atomic variables is made; the coherent nature of "incoming" of incident photons into a cavity is correctly taken into account. On condition of bistability, although the strongly sub-Poisson input-photon statistics ( = -1) generally reduces the output noise as compared to the case of coherent input ( = 0), the inequality tout > 0 still holds near the switching points.