SELF-STABILIZATION OF TWIN BEAMS BY A PASSIVE KERR MEDIUM

A passive optical system is proposed which is able to produce an inten sity squeezed light starting from twin beams having intensity correlat ed beams at the quantum level. It consists in using a nonlinear medium presenting a crossed Kerr effect inserted in an optical cavity. The i ntensity fluctuations of one beam modify the resonance condition of th e cavity for the other, and therefore its intensity. It is shown that this system is able to produce a substantial noise reduction.