| Original Articles |
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Scheme for Concentration of Unknown Greeberger--Horne--Zeilinger Entangled States via Cavity Decay |
| ZHANG Xiao-Wei;LIU Xiang;TANG Xiao-Fang;TANG You-Liang |
| Department of Physics, Hunan Normal University, Changsha 410081 |
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| Cite this article: |
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ZHANG Xiao-Wei, LIU Xiang, TANG Xiao-Fang et al 2007 Chin. Phys. Lett. 24 602-605 |
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Abstract We present a scheme for entanglement concentration of an unknown atomic
non-maximally entangled GHZ state via cavity decay. In the scheme, the atom trapped in a cavity is manipulated by laser field, so the maximally entangled GHZ state can be obtained by performing certain operation, which can be realized by illuminating the atom in a cavity. Our method is robust against spontaneous atomic decay.
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| Keywords:
03.67.Hk
42.50.Dv
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Received: 01 August 2006
Published: 08 February 2007
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| PACS: |
03.67.Hk
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(Quantum communication)
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42.50.Dv
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(Quantum state engineering and measurements)
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