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No-cloning theorem and teleportation criteria for quantum continuous variables

Frédéric Grosshans·Philippe Grangier
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Abstract

We discuss the criteria presently used for evaluating the efficiency of quantum teleportation schemes for continuous variables. Using an argument based upon the difference between 1-to-2 quantum cloning (quantum duplication) and 1-to-infinity cloning (classical measurement), we show that a fidelity value larger than 2/3 is required for successful quantum teleportation of coherent states. This value has not been reached experimentally so far.

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Frédéric Grosshans, Philippe Grangier. 2000-12-21. No-cloning theorem and teleportation criteria for quantum continuous variables. https://doi.org/10.1103/physreva.64.010301

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