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Scheme for linear optical preparation of a type of four-photon entangled state with conventional photon detectors

  • Quantum Optics and Quantum Information
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Abstract

We propose a simple experimental scheme to prepare a type of four-photon entangled state |χ〉 that has many interesting entanglement properties and possible applications in quantum information processing with a certain success probability. The proposed setup involves only simple linear optical devices, a single-photon polarization state, three pairs of two-photon polarization entangled states, and the conventional photon detectors that cannot distinguish a single photon from two or more photons, which greatly simplify 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, Heilongjiang, 150001, P.R. China

    H. F. Wang & S. Zhang

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

    S. Zhang

Authors
  1. H. F. Wang
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  2. S. Zhang
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Correspondence to S. Zhang.

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Wang, H., Zhang, S. Scheme for linear optical preparation of a type of four-photon entangled state with conventional photon detectors. Eur. Phys. J. D 53, 359–363 (2009). https://doi.org/10.1140/epjd/e2009-00129-2

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  • DOI: https://doi.org/10.1140/epjd/e2009-00129-2

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