Entanglement in Anisotropic Heisenberg Model with Non-Uniform External Fields
WANG Yuan-Feng, CAO Jun-Peng, WANG Yu-Peng
Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Entanglement in Anisotropic Heisenberg Model with Non-Uniform External Fields
WANG Yuan-Feng;CAO Jun-Peng;WANG Yu-Peng
Institute of Physics, Chinese Academy of Sciences, Beijing 100080
关键词 ：
03.67.Mn ,
03.65.Ud ,
75.10.Jm
Abstract ： We study entanglement properties of the three-qubit anisotropic Heisenberg model with both uniform and non-uniform external magnetic fields. Analytic expressions for the measures of entanglement at the ground state are obtained. We show that the pairwise entanglement and global entanglement of the system at the ground state clearly depend on the strength and configuration of external fields. The entanglement between some pairs can be enhanced by non-uniform external fields.
Key words ：
03.67.Mn
03.65.Ud
75.10.Jm
出版日期: 2005-09-01
:
03.67.Mn
(Entanglement measures, witnesses, and other characterizations)
03.65.Ud
(Entanglement and quantum nonlocality)
75.10.Jm
(Quantized spin models, including quantum spin frustration)
引用本文:
WANG Yuan-Feng;CAO Jun-Peng;WANG Yu-Peng. Entanglement in Anisotropic Heisenberg Model with Non-Uniform External Fields[J]. 中国物理快报, 2005, 22(9): 2151-2153.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I9/2151
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2005, Vol. 22 
