Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field

doi:10.1088/1674-1056/19/9/090313

中国物理B ›› 2010, Vol. 19 ›› Issue (9): 90313-090313.doi: 10.1088/1674-1056/19/9/090313

Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field

王洪福¹, 邵晓强¹, 高丹², 赵振双², 朱爱东², 张寿²

(1)Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China; (2)Department of Physics, College of Science, Yanbian University, Yanji 133002, China

收稿日期:2009-10-22 修回日期:2010-12-30 出版日期:2010-09-15 发布日期:2010-09-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60667001).

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

Received:2009-10-22 Revised:2010-12-30 Online:2010-09-15 Published:2010-09-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60667001).

摘要/Abstract

摘要： 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 D_z, the increase of b_z 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.

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 D_z, the increase of b_z 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.

Key words: teleportation, thermal entanglement, Heisenberg XYZ spin chain

中图分类号:

0365

高丹, 赵振双, 朱爱东, 王洪福, 邵晓强, 张寿. Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field[J]. 中国物理B, 2010, 19(9): 90313-090313.

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[J]. Chin. Phys. B, 2010, 19(9): 90313-090313.

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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

Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski–Moriya interaction and the inhomogeneous magnetic field

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