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Single-photon router: Implementation of Information-Holding of Quantum States

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Abstract

The quantum router is an indispensable element in the future quantum network. In this study, by calculating the fidelity of the atom, we show that the quantum router proposed by J. Lu et al. (Phys. Rev. A 89, 013805, 2014) achieves quantum information-holding. After the single photon passes through the atom, the fidelity of the atom decreases from the maximum value after a period of time and rises to the maximum value of 1. Even upon changing the size of the classical field, this phenomenon will not disappear, only undergo a cycle change. This means such a single-photon quantum router can be applied experimentally since quantum state can be perfectly held after the routing.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China under grant No. 61471356, 11365009.

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Authors and Affiliations

  1. Department of Applied Physics, East China Jiaotong University, Nanchang, 330013, China

    Guo-an Yan & Ai-xi Chen

  2. State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China

    Guo-an Yan

  3. School of Science, Hubei University of Technology, Wuhan, 430068, China

    Hua Lu

  4. Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada

    Ai-xi Chen

Authors
  1. Guo-an Yan
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  2. Hua Lu
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Correspondence to Hua Lu.

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Yan, Ga., Lu, H. & Chen, Ax. Single-photon router: Implementation of Information-Holding of Quantum States. Int J Theor Phys 55, 3366–3374 (2016). https://doi.org/10.1007/s10773-016-2965-3

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  • DOI: https://doi.org/10.1007/s10773-016-2965-3

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