| Thermal quantum discord in Heisenberg models with Dzyaloshinski-Moriya interaction |
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| 作者姓名： | 王林成 闫俊彦 衣学喜 |
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| 作者单位： | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 10905007 and 61078011) and the Fundamental Research Funds for the Central Universities. |
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| 摘 要： | We study the quantum discord of the bipartite Heisenberg model with the Dzyaloshinski-Moriya (DM) interaction in thermal equilibrium state and discuss the effect of the DM interaction on the quantum discord. The quantum entanglement of the system is also discussed and compared with quantum discord. Our results show that the quantum discord may reveal more properties of the system than quantum entanglement and the DM interaction may play an important role in the Heisenberg model.
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| 关 键 词： | quantum discord thermal equilibrium state Heisenberg model Dzyaloshinski–Moriya interaction |
| 收稿时间： | 9/9/2010 12:00:00 AM |
| 修稿时间： | 1/4/2011 12:00:00 AM |
Thermal quantum discord in Heisenberg models with Dzyaloshinski–Moriya interaction |
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| Wang Lin-Cheng,Yan Jun-Yan and Yi Xue-Xi.Thermal quantum discord in Heisenberg models with Dzyaloshinski-Moriya interaction[J].Chinese Physics B,2011,20(4):40305-040305. |
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| Authors: | Wang Lin-Cheng Yan Jun-Yan and Yi Xue-Xi |
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| Institution: | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | We study the quantum discord of the bipartite Heisenberg model with the Dzyaloshinski-Moriya (DM) interaction in thermal equilibrium state and discuss the effect of the DM interaction on the quantum discord. The quantum entanglement of the system is also discussed and compared with quantum discord. Our results show that the quantum discord may reveal more properties of the system than quantum entanglement and the DM interaction may play an important role in the Heisenberg model. |
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| Keywords: | quantum discord thermal equilibrium state Heisenberg model Dzyaloshinski--Moriya interaction |
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