title: Manipulating the non-Gaussianity of phase-randomized coherent states.
abstract: We experimentally investigate the non-Gaussian features of the phase-randomized coherent states, a class of states exploited in communication channels and in decoy state-based quantum key distribution protocols. In particular, we reconstruct their phase-insensitive Wigner functions and quantify their non-Gaussianity. The measurements are performed in the mesoscopic photon-number domain by means of a direct detection scheme involving linear detectors.
authors.affiliation: Dipartimento di Scienza e Alta Tecnologia, Universit`a degli Studi dell’Insubria and CNISM UdR Como, via Valleggio 11, 22100 Como, Italy. alessia.allevi@uninsubria.it
authors.forename: Alessia
authors.initials: A
authors.lastname: Allevi
authors.forename: Stefano
authors.initials: S
authors.lastname: Olivares
authors.forename: Maria
authors.initials: M
authors.lastname: Bondani