Eur. Phys. J. D 56, 265-269 (2010)
https://doi.org/10.1140/epjd/e2009-00249-7

Entanglement and teleportation through a two-qubit Heisenberg XXZ model with the Dzyaloshinskii-Moriya interaction

School of physics and optoelectronic technology, Dalian University of Technology, Dalian 116024, P.R. China

Corresponding author: guojinliang80@163.com

Received: 5 March 2009
Revised: 27 July 2009
Published online: 19 September 2009

Abstract

We study the thermal entanglement in the two-qubit Heisenberg XXZ model with the Dzyaloshinskii-Moriya (DM) interaction, and teleport an unknown state using the model in thermal equilibrium state as a quantum channel. The effects of DM interaction, including D_x and D_z interaction, the anisotropy and temperature on the entanglement and fully entangled fraction are considered. What deserves mentioning here is that for the antiferromagnetic case, the D_x interaction can be more helpful for increasing the entanglement and critical temperature than D_z, but this cannot for teleportation.