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  • Received: Sep. 10, 2019

    Accepted: Jan. 10, 2020

    Posted: Apr. 29, 2020

    Published Online: May. 6, 2020

    The Author Email: Peng Xue (gnep.eux@gmail.com)

    DOI: 10.3788/COL202018.052701

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    Gaoyan Zhu, Lei Xiao, Bingzi Huo, Peng Xue. Photonic discrete-time quantum walks [Invited][J]. Chinese Optics Letters, 2020, 18(5): 052701

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Chinese Optics Letters, Vol. 18, Issue 5, 052701 (2020)

Photonic discrete-time quantum walks [Invited] 

Gaoyan Zhu1,2, Lei Xiao1,2, Bingzi Huo2, and Peng Xue2,*

Author Affiliations

  • 1Department of Physics, Southeast University, Nanjing 211189, China
  • 2Beijing Computational Science Research Center, Beijing 100084, China

Abstract

Quantum walks, a counterpart of classical random walks, have many applications due to their neoteric features. Since they were first proposed, quantum walks have been explored in many fields theoretically and have also been demonstrated experimentally in various physical systems. In this paper, we review the experimental realizations of discrete-time quantum walks in photonic systems with different physical structures, such as bulk optics and time-multiplexed framework. Then, some typical applications using quantum walks are introduced. Finally, the advantages and disadvantages of these physical systems are discussed.

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