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SCHEME FOR ENTANGLEMENT CONCENTRATION OF UNKNOWN W CLASS STATES IN BAD CAVITIES
https://doi.org/10.1142/S0217979210054750Cited by:1 (Source: Crossref)
Abstract
In this paper, we propose an entanglement concentration protocol for unknown tripartite W class states via the detection of photons which are leaked out from the cavities. In our scheme, the atom-cavity coupling strength is smaller than the cavity decay rate. Hence, the requirement on the quality factor of the cavities is greatly relaxed. The scheme is for nonpost-selection results and the fidelity of the scheme is not affected by the detection inefficiency and atomic decay. All the processes are within the current technologies.
PACS: 03.67.Mn, 03.65.Ud, 05.30.-d
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