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Swap of Quantum Information between Two-End States in an Open Ferromagnetic Spin Chain
Tao Song,Shiqun Zhu *,Xiang Hao #
School of Physical Science and Technology, Suzhou University
*Correspondence author
#Submitted by
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Funding: none
Opened online:16 September 2008
Accepted by: none
Citation: Tao Song,Shiqun Zhu,Xiang Hao.Swap of Quantum Information between Two-End States in an Open Ferromagnetic Spin Chain[OL]. [16 September 2008] http://en.paper.edu.cn/en_releasepaper/content/24076
 
 
The bidirectional transfer of quantum information can be realized in an open Heisenberg ferromagnetic spin chain in a magnetic field. The information is encoded in the population distribution of the states at two end spins. The fidelity for swapping the information is used to evaluate the effective transmission of the population. It is found that the evolution of the fidelity shows a periodical behavior. The period is increased with increasing the length of the chain and the magnetic field while it decreases with increasing the coupling strength.
Keywords:Ferromagnetic Chain;Probability Distribution;Swap Action
 
 
 

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