State reconstruction of a multimode twin beam using photodetection

Autor:	Perina Jr, Jan, Haderka, Ondrej, Michalek, Vaclav, Hamar, Martin
Rok vydání:	2013
Předmět:	Quantum Physics
Zdroj:	Phys. Rev. A 87, 022108 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.87.022108
Popis:	Robust and reliable method for reconstructing quasi-distributions of integrated intensities of twin beams generated in spontaneous parametric down-conversion and entangled in photon numbers is suggested. It utilizes the first and second photocount moments and minimizes the declination from experimental photocount histograms. Qualitatively different forms of quasi-distributions for quantum and classical states are suggested in the method. The transition from quantum to classical states caused by an increased detection noise is discussed. Momentum criterion for non-classicality of twin beams is suggested. Comment: 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1302.0156 Zobrazit plný text záznamu View this record from Arxiv