GENERAL

Quantum Teleportation via Completely Anisotropic Heisenberg Chain in Inhomogeneous Magnetic Field

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2013 Chinese Physical Society and IOP Publishing Ltd
, , Citation Fu Cheng-Hua and Hu Zhan-Ning 2013 Commun. Theor. Phys. 59 398 DOI 10.1088/0253-6102/59/4/03

0253-6102/59/4/398

Abstract

The quantum teleportation with the entangled thermal state is investigated based on the completely anisotropic Heisenberg chain in the presence of the externally inhomogeneous magnetic field. The effects of the anisotropy and magnetic field for the quantum fidelity are studied in detail. The zero temperature limit and the features of the nonzero temperature for this nonclassical fidelity are obtained. We find that the quantum teleportation demands more stringent conditions than the thermal entanglement of the resource by investigating the threshold temperature of the thermal concurrence and the critical temperature of the maximal teleportation fidelity. The useful quantum teleportation should avoid the point of the phase transition of the system and the anisotropy of the chain and the external magnetic field can control the applicability of the resource in the quantum teleportation.

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10.1088/0253-6102/59/4/03