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Efficient Superdense Coding with W States

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Abstract

Superdense coding is a distinct property of quantum entanglement. In this paper, we show that the bipartite three-particle W state can transmit 3 bits by sending two qubits using single qubit operations. This has justified previous conjecture (Agrawal and Pati, Phys. Rev. A 74(6), 062320 2006). Similar result holds for hyperentangled W states.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Nos.61472464, 61772437, 61702427), the Natural Science Foundation of Shandong Province (No.ZR2015FL024), Chongqing Research Program Basic Research Frontier Technology(No.cstc2016jcyjA2288, No.cstc2017jcyjA0871), Chongqing science and Technology Commission Project (No:cstc2014jcyjA10051), and Sichuan Youth Science and Technique Foundation (No.2017JQ0048).

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Authors and Affiliations

  1. College of Computer Science, Chongqing University, Chongqing, 400044, China

    You-Sheng Zhou

  2. School of Cyber Security and Information Law, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China

    You-Sheng Zhou

  3. College of Mathematical Sciences, Dezhou University, Dezhou, 253023, China

    Feng Wang

  4. Information Security and National Computing Grid Laboratory, Southwest Jiaotong University, Chengdu, 610031, China

    Ming-Xing Luo

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  1. You-Sheng Zhou
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  2. Feng Wang
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Correspondence to Ming-Xing Luo.

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Zhou, YS., Wang, F. & Luo, MX. Efficient Superdense Coding with W States. Int J Theor Phys 57, 1935–1941 (2018). https://doi.org/10.1007/s10773-018-3718-2

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  • DOI: https://doi.org/10.1007/s10773-018-3718-2

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