Non-Gaussianity of quantum states: an experimental test on single-photon added coherent states
Quantum Physics
2011-01-14 v1
Abstract
Non Gaussian states and processes are useful resources in quantum information with continuous variables. An experimentally accessible criterion has been proposed to measure the degree of non Gaussianity of quantum states, based on the conditional entropy of the state with a Gaussian reference. Here we adopt such criterion to characterise an important class of non classical states, single-photon added coherent states. Our studies demonstrate the reliability and sensitivity of this measure, and use it to quantify how detrimental is the role of experimental imperfections in our realisation.
Keywords
Cite
@article{arxiv.1012.0466,
title = {Non-Gaussianity of quantum states: an experimental test on single-photon added coherent states},
author = {Marco Barbieri and Nicolò Spagnolo and Marco G. Genoni and Franck Ferreyrol and Rémi Blandino and Matteo G. A. Paris and Philippe Grangier and Rosa Tualle-Brouri},
journal= {arXiv preprint arXiv:1012.0466},
year = {2011}
}