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Influence of selective atomic measurement on the entanglement properties of a two-atom outside cavity |
| Lu Dao-Ming(卢道明)† |
| Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China |
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Abstract Considering three two-level atoms initially in the W or Greenberger–Horne–Zeilinger (GHZ) state, one of the three atoms is put into an initially coherent light cavity and made to resonantly interact with the cavity. The two-atom entanglement evolution outside the cavity is investigated. The influences of state-selective measurement of the atom inside the cavity and strength of the light field on the two-atom entanglement evolution outside the cavity are discussed. The results obtained from the numerical method show that the two-atom entanglement outside the cavity is strengthened through state-selective measurement of the atom inside the cavity. In addition, the strength of the light field also influences the two-atom entanglement properties.
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Received: 20 April 2010
Revised: 15 May 2010
Accepted manuscript online:
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PACS:
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03.65Ud
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42.50.Dv
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(Quantum state engineering and measurements)
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| Fund: Project supported by the Natural Science Foundation of Fujian Province, China (Grant No. 2008J0217). |
Cite this article:
Lu Dao-Ming(卢道明) Influence of selective atomic measurement on the entanglement properties of a two-atom outside cavity 2011 Chin. Phys. B 20 030301
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