Classical phase-space descriptions of continuous-variable teleportation
arXiv:quant-ph/0401149 · doi:10.1103/PhysRevLett.93.040506
Abstract
The nonnegative Wigner function of all quantum states involved in teleportation of Gaussian states using the standard continuous-variable teleportation protocol means that there is a local realistic phase-space description of the process. This includes the coherent states teleported up to now in experiments. We extend the phase-space description to teleportation of non-Gaussian states using the standard protocol and conclude that teleportation of non-Gaussian states with fidelity of 2/3 is a "gold standard" for this kind of teleportation.
New version contains minor changes requested by journal referees
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