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Classical phase-space descriptions of continuous-variable teleportation

Carlton M. Caves·Krzysztof Wodkiewicz
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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.

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Carlton M. Caves, Krzysztof Wodkiewicz. 2004-05-28. Classical phase-space descriptions of continuous-variable teleportation. https://doi.org/10.1103/physrevlett.93.040506

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