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Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field |
Gao Dan(高丹)a), Zhao Zhen-Shuang(赵振双)a), Zhu Ai-Dong(朱爱东)a), Wang Hong-Fu(王洪福)b), Shao Xiao-Qiang(邵晓强)b), and Zhang Shou(张寿)a)† |
a Department of Physics, College of Science, Yanbian University, Yanji 133002, China; b Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China |
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Abstract This paper studies the average fidelity of teleportation and thermal entanglement for a two-qubit Heisenberg XYZ chain in the presence of both an inhomogeneous magnetic field and a Dzyaloshinski–Moriya interaction. It shows that for a fixed Dz, the increase of bz will broaden the critical temperature at the cost of decreasing the thermal entanglement. And it can modulate the inhomogeneous magnetic field and the Dzyaloshinski–Moriya interaction for the average fidelity of teleportation to be optimal.
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Received: 22 October 2009
Revised: 30 December 2010
Accepted manuscript online:
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60667001). |
Cite this article:
Gao Dan(高丹), Zhao Zhen-Shuang(赵振双), Zhu Ai-Dong(朱爱东), Wang Hong-Fu(王洪福), Shao Xiao-Qiang(邵晓强), and Zhang Shou(张寿) Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field 2010 Chin. Phys. B 19 090313
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