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PAIRWISE ENTANGLEMENT WITH SPIN IMPURITY
Dong Xiaoyan,Zhu Shiqun *,Hao Xiang
School of Physical Science and Technology
*Correspondence author
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Funding: none
Opened online:17 September 2008
Accepted by: none
Citation: Dong Xiaoyan,Zhu Shiqun ,Hao Xiang .PAIRWISE ENTANGLEMENT WITH SPIN IMPURITY[OL]. [17 September 2008] http://en.paper.edu.cn/en_releasepaper/content/24095
 
 
The zero-temperature pairwise entanglement is investigated in the antiferromagnetic Heisenberg chain with one impure spin s. The impurity location is varied from the open end to a mediate site of the spin chain. It is found that the pairwise entanglement is proportional to 1/s. This means that the entanglement will disappear in the classical systems as s → ∞. Compared to the isotropic Heisenberg chain without impurity, the efficient control of the spin coupling between the impurity spin and nearest-neighbor spins can enhance the pairwise entanglement.
Keywords:Concurrence;inpurity;spin
 
 
 

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