Degaussification of twin-beam and nonlocality in the phase space
英文摘要：
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.
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