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Updated: May 16, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Manipulating the non-Gaussianity of phase-randomized coherent states
Alessia Allevi1, Stefano Olivares, Maria Bondani
1Dipartimento 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
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.
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