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Entanglement Enhancement in an XY Spin Chain |
| SU Xiao-Qiang**
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College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004
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| Cite this article: |
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SU Xiao-Qiang 2011 Chin. Phys. Lett. 28 050309 |
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Abstract We study evolution of entanglement in an XY-type spin channel and find that the entanglement can be enhanced by the spin channel. The parameter regions of the initial states for different numbers of sites are obtained. Furthermore, we consider a common spin environment coupling to the spin chains and find that the entanglement enhancement can also be implemented only for the chains with the odd numbers of sites.
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| Keywords:
03.67.Mn
03.67.Hk
05.50.+q
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Received: 14 December 2010
Published: 26 April 2011
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| PACS: |
03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.67.Hk
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(Quantum communication)
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05.50.+q
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(Lattice theory and statistics)
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