Thermal entanglement in a case of two spin temperatures

Mikhail Kutcherov

doi:10.1117/12.801907

29 April 2008 Thermal entanglement in a case of two spin temperatures

Mikhail Kutcherov

Proceedings Volume 7023, Quantum Informatics 2007; 70230E (2008) https://doi.org/10.1117/12.801907
Event: Quantum Informatics 2007, 2007, Moscow, Russian Federation

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.

Citation Download Citation

Mikhail Kutcherov "Thermal entanglement in a case of two spin temperatures", Proc. SPIE 7023, Quantum Informatics 2007, 70230E (29 April 2008); https://doi.org/10.1117/12.801907

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