We present a robust tool to analyze nonclassical properties of multimode twin-beam states in the mesoscopic photon-number domain. The measurements are performed by direct detection. The analysis exploits three different non-classicality criteria for detected photons exhibiting complementary behavior in the explored intensity regime. Joint signal-idler photon-number distributions and quasi-distributions of integrated intensities are determined and compared with the corresponding distributions of detected photons. Experimental conditions optimal for nonclassical properties of twin-beam states are identified.
@article{arxiv.1311.4049,
title = {Characterizing the non-classicality of mesoscopic optical twin-beam states},
author = {Alessia Allevi and Marco Lamperti and Maria Bondani and Jan Perina and Vaclav Michalek and Ondrej Haderka and Radek Machulka},
journal= {arXiv preprint arXiv:1311.4049},
year = {2015}
}