Ground-State Entanglement and Mixture in an XXZ Spin Chain
WANG Cheng-Zhi, LI Chun-Xian, GUO Guang-Can
Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026
Ground-State Entanglement and Mixture in an XXZ Spin Chain
WANG Cheng-Zhi;LI Chun-Xian;GUO Guang-Can
Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026
关键词 ：
03.65.Ud ,
02.67.Mn ,
75.10.Jm
Abstract ： We study the pairwise entanglement and mixture of a three-qubit XXZ spin chain in the ground state in the presence of an external magnetic field B. The effects of the magnetic field, the anisotropy and the temperature on the entanglement and mixture are considered, and entanglement versus the mixture of all the two-spin states is investigated. We find that the maximal entangled mixed state can be obtained in the considered system by controlling the magnetic field. Our results provide another way to generate maximally entangled mixed states.
Key words ：
03.65.Ud
02.67.Mn
75.10.Jm
出版日期: 2005-08-01
:
03.65.Ud
(Entanglement and quantum nonlocality)
02.67.Mn
75.10.Jm
(Quantized spin models, including quantum spin frustration)
引用本文:
WANG Cheng-Zhi;LI Chun-Xian;GUO Guang-Can. Ground-State Entanglement and Mixture in an XXZ Spin Chain[J]. 中国物理快报, 2005, 22(8): 1829-1832.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I8/1829
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2005, Vol. 22 
