Teleportation: from probability distributions to quantum states

Details Teleportation: from probability distributions to quantum states Teleportation: from probability distributions to quantum states

2000-11-20

arxiv.org/abs/quant-ph/0011083v2

J. Phys A (Math. Gen.) vol. 34, pp. 6949-6955 (2001)

Physics

Quantum Physics

11 pages, 1 figure, accepted for publication in J. Phys. A (Math. Gen.)

Scientific paper

10.1088/0305-4470/34/35/320

The role of the off-diagonal density matrix elements of the entangled pair is investigated in quantum teleportation of a qbit. The dependence between them and the off-diagonal elements of the teleported density matrix is shown to be linear. In this way the ideal quantum teleportation is related to an entirely classical communication protocol: the one-time pad cypher. The latter can be regarded as the classical counterpart of Bennett's quantum teleportation scheme. The quantum-to-classical transition is demonstrated on the statistics of a gedankenexperiment.

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