| Teleportation and thermal entanglement in two-qubit Heisenberg X Y Z spin chain with the Dzyaloshinski-Moriya interaction and the inhomogeneous magnetic field |
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| 引用本文： | 高丹,赵振双,朱爱东,王洪福,邵晓强,张寿. Teleportation and thermal entanglement in two-qubit Heisenberg X Y Z spin chain with the Dzyaloshinski-Moriya interaction and the inhomogeneous magnetic field[J]. 中国物理 B, 2010, 19(9): 90313-090313 |
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| 作者姓名： | 高丹 赵振双 朱爱东 王洪福 邵晓强 张寿 |
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| 作者单位： | Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 60667001). |
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| 摘 要： | This paper studies the average fidelity of teleportation and thermal entanglement for a two-qubit Heisenberg X Y Z 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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| 关 键 词： | teleportation thermal entanglement Heisenberg X Y Z spin chain |
| 收稿时间： | 2009-10-22 |
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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| Gao Dan,Zhao Zhen-Shuang,Zhu Ai-Dong,Wang Hong-Fu,Shao Xiao-Qiang and Zhang Shou. Teleportation and thermal entanglement in two-qubit Heisenberg XYZ spin chain with the Dzyaloshinski—Moriya interaction and the inhomogeneous magnetic field[J]. Chinese Physics B, 2010, 19(9): 90313-090313 |
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| Authors: | Gao Dan Zhao Zhen-Shuang Zhu Ai-Dong Wang Hong-Fu Shao Xiao-Qiang Zhang Shou |
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| Affiliation: | Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China; Department of Physics, College of Science, Yanbian University, Yanji 133002, 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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| Keywords: | teleportation thermal entanglement Heisenberg XYZ spin chain |
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