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Linear optical scheme for entanglement concentration of two partially entangled three-photon \({\sf W}\) states

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Abstract

We propose a practical scheme for concentrating entanglement in a pair of unknown partially entangled three-photon W states with only linear optics and photon detectors. In the scheme, Alice, Bob, and Charlie at three distant parties can obtain one maximally entangled three-photon W state with a certain success probability from two identical partially entangled three-photon W states by local operations and classical communication. The proposed setup is very simple, which greatly simplifies the experimental realization of the scheme.

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Authors and Affiliations

  1. Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, P.R. China

    H. F. Wang & S. Zhang

  2. Department of Physics, College of Science, Yanbian University, Yanji, 133002, Jilin, P.R. China

    S. Zhang

  3. Department of Physics & BK21 Program for Device Physics, College of Natural Science, Chungbuk National University, Cheongju, 361-763, Chungbuk, Republic of Korea

    K. H. Yeon

Authors
  1. H. F. Wang
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  2. S. Zhang
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  3. K. H. Yeon
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Correspondence to S. Zhang.

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Wang, H., Zhang, S. & Yeon, K. Linear optical scheme for entanglement concentration of two partially entangled three-photon \({\sf W}\) states. Eur. Phys. J. D 56, 271–275 (2010). https://doi.org/10.1140/epjd/e2009-00277-3

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  • DOI: https://doi.org/10.1140/epjd/e2009-00277-3

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