Manipulating the non-Gaussianity of phase-randomized coherent states
arXiv:1210.0303 · doi:10.1364/OE.20.024850
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.
6 pages, 4 figures
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- Soft-metric based channel decoding for photon counting receivers
- Ultrafast pump-probe phase-randomized tomography
- Experimental quantification of non-Gaussianity of phase-randomized coherent states
- Quantum communications in continuous variable systems
- Joint estimation of noise and nonlinearity in Kerr systems