Optimal sub-Poissonian light generation from twin beams by photon-number resolving detectors

TL;DR

This paper demonstrates how to generate sub-Poissonian light by exploiting quantum correlations in twin beams and identifies optimal conditions for producing nonclassical states with reduced photon number fluctuations.

Contribution

It experimentally links sub-shot-noise correlations in twin beams to the sub-Poissonian nature of conditional states, establishing optimal generation conditions.

Findings

Strong relation between sub-shot-noise correlations and sub-Poissonian states

Experimental verification of nonclassical conditional states

Identification of optimal parameters for sub-Poissonian light generation

Abstract

We generate nonclassical conditional states by exploiting the quantum correlations of multi-mode twin-beam states endowed with a sizeable number of photons. A strong relation between the sub-shot-noise correlations exhibited by twin beams and the sub-Poissonian character of the conditional states is experimentally revealed. It determines optimal conditions for sub-Poissonian light generation.