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Efficient entanglement concentration for arbitrary less-hyperentanglement multi-photon W states with linear optics

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Abstract

We present an efficient protocol to concentrate arbitrary less-hyperentangled multi-photon W states to the maximally hyperentangled multi-photon W state with parameter-splitting method and linear optics elements. Compared with previous entanglement concentration works, the present protocol does not need two copies of partially entangled states or the ancillary single photon. Moreover, we discuss the feasibility of the setups of the protocol, concluding that the present protocol is feasible with the current technology. Thus, the protocol may be more meaningful in practical quantum information applications.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grants No. 11105030 and No. 11374054, and the Major State Basic Research Development Program of China under Grant No. 2012CB921601.

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Authors and Affiliations

  1. Department of Physics, Fuzhou University, Fuzhou, 350002, Fujian, China

    Lin-Lin Fan & Yan Xia

  2. Department of Physics, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China

    Jie Song

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  1. Lin-Lin Fan
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  2. Yan Xia
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Correspondence to Yan Xia.

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Fan, LL., Xia, Y. & Song, J. Efficient entanglement concentration for arbitrary less-hyperentanglement multi-photon W states with linear optics. Quantum Inf Process 13, 1967–1978 (2014). https://doi.org/10.1007/s11128-014-0789-8

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  • DOI: https://doi.org/10.1007/s11128-014-0789-8

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