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arXiv:quant-ph/0103075 · Physics Letters A

On the nonlocality of the quantum channel in the standard teleportation protocol

Rob Clifton, Damian T. Pope

Published Dec 1, 2001• 16 citations
arXivHTMLPDF
DOI
10.1016/s0375-9601(01)00743-5

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Teleportation for pure states, mixed states with standard and optimal protocols are introduced and investigated systematically. An explicit equation governing the teleportation of finite dimensional quantum pure states by a generally given non-local entangled state is presented. For the teleportation of a mixed state with an arbitrary mixed state resource, an explicit expression is obtained for the quantum channel associated with the standard teleportation protocol. The corresponding transmission fidelity is calculated. It is shown that the standard teleportation protocol is not optimal. The optimal quantum teleportation is further studied, its fidelity is given and shown to be related to the fully entangled fraction of the quantum resource, rather than the single fraction as in the standard teleportation protocol.