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In quantum information, quantum teleportation, or entanglement-assisted teleportation is a technique that transfers a quantum state to an arbitrarily distant location using a distributed entangled state and the transmission of some classical information. Quantum teleportation does not transport energy or matter, nor does it allow communication of information at superluminal speed.

Motivation


This article will use standard nomenclature in quantum information: the two parties are Alice (A) and Bob (B), and a qubit is in general a superposition of quantum state labelled |0\rangle and |1\rangle. Equivalently, a qubit is a unit vector in two-dimensional Hilbert space.

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Beaming Is Believing - Practical applications for teleportation, though not exactly the type seen in Star Trek, could be less than a generation away. Article on wired.com.
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