Teleportation via thermally entangled state of a three-qubit Heisenberg XX ring

Details Teleportation via thermally entangled state of a three-qubit Heisenberg XX ring Teleportation via thermally entangled state of a three-qubit Heisenberg XX ring

2003-02-12

arxiv.org/abs/quant-ph/0302101v1

Physics

Quantum Physics

15 pages, 3 tables, REVTex4

Scientific paper

We consider quantum teleportation using the thermally entangled state of a three-qubit Heisenberg XX ring as a resource. Our investigation reveals interesting aspects of quantum entanglement not reflected by the pairwise thermal concurrence of the state. In particular, two mixtures of different pairs of W states, which result in the same concurrence, could yield very differrent average teleportation fidelities.

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