Degaussification of twin-beam and nonlocality in the phase space
arXiv:quant-ph/0406030 · doi:10.1103/PhysRevA.70.032112
Abstract
We show that inconclusive photon subtraction (IPS) on twin-beam produces non-Gaussian states that violate Bell's inequality in the phase-space. The violation is larger than for the twin-beam itself irrespective of the IPS quantum efficiency. The explicit expression of IPS map is given both for the density matrix and the Wigner function representations.
arXiv comment7 pages, 6 figures
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