NEW PROPOSAL FOR MEASURING THE QUANTUM FLUCTUATIONS IN A LIGHT-BEAM USING A NON-LINEAR INTERFEROMETER

With the help of an interferometric arrangement, where in one branch an intensity-dependent phase displacement is produced, we can determine small deviations from the Poisson distribution existing in an intense initial beam. This technique only requires the measurement of the minimum transmitted intensity and has therefore the great advantage that no photon coincidence measurements are necessary. © 1979.