PMID: 11909386Mar 23, 2002Paper

Anisotropy and magnetic field effects on the entanglement of a two qubit Heisenberg XY chain

Physical Review Letters
G Lagmago Kamta, Anthony F Starace

Abstract

We investigate the entanglement of a two-qubit anisotropic Heisenberg XY chain in thermal equilibrium at temperature T in the presence of an external magnetic field B along the z axis. By means of the combined influences of anisotropic interactions and a magnetic field B, one is able to produce entanglement for any finite T, by adjusting the magnetic field strength. This contrasts with the isotropic interaction or the B = 0 cases, for which there is no entanglement above a critical temperature T(c) that is independent of the external B field.

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Citations

Sep 28, 2004·Physical Review Letters·Shi-Jian GuHai-Qing Lin
Dec 13, 2006·Physical Review Letters·T Yu, J H Eberly
May 17, 2017·Physical Review. E·Kamel Ourabah, Mouloud Tribeche
Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Xiaoguang Wang
Dec 17, 2004·Physical Review Letters·J S Pratt

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