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Proceedings Paper

Thermal entanglement in a case of two spin temperatures
Author(s): Mikhail Kutcherov
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Paper Abstract

In this paper we study the influence of pulse NMR on the usefulness of the entanglement in a two-qubit XXZ chain at different temperatures of the Zeeman and dipole-dipole reservoirs as resource for quantum teleportation via the standard teleportation protocol. We show that the nonzero entanglement produced at a high temperature and the initial polarization exceeding some threshold value after a (π/2)y pulse of RF field is an useful resource. We also report on the exact calculation of the necessary and sufficient conditions of entanglement for an ensemble of spin pairs under non-equilibrium states.

Paper Details

Date Published: 29 April 2008
PDF: 9 pages
Proc. SPIE 7023, Quantum Informatics 2007, 70230E (29 April 2008); doi: 10.1117/12.801907
Show Author Affiliations
Mikhail Kutcherov, Polytechnic Institute of Siberian Federal Univ. (Russia)

Published in SPIE Proceedings Vol. 7023:
Quantum Informatics 2007
Yuri I. Ozhigov, Editor(s)

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