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  • Received: May. 10, 2020

    Accepted: Jun. 1, 2020

    Posted: Jul. 30, 2020

    Published Online: Aug. 3, 2020

    The Author Email: Yongnan Li (, Hui-Tian Wang (

    DOI: 10.3788/COL202018.102601

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    Wen-Rong Qi, Rui Liu, Ling-Jun Kong, Zhou-Xiang Wang, Shuang-Yin Huang, Chenghou Tu, Yongnan Li, Hui-Tian Wang. Double-slit interference of single twisted photons[J]. Chinese Optics Letters, 2020, 18(10): 102601

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Chinese Optics Letters, Vol. 18, Issue 10, 102601 (2020)

Double-slit interference of single twisted photons 

Wen-Rong Qi1, Rui Liu1, Ling-Jun Kong2, Zhou-Xiang Wang1, Shuang-Yin Huang1, Chenghou Tu1, Yongnan Li1,*, and Hui-Tian Wang2,**

Author Affiliations

  • 1Key Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin 300071, China
  • 2National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China


Optical orbital angular momentum (OAM) is a special property of photons and has evoked research onto the light–matter interaction in both classical and quantum regimes. In classical optics, OAM is related to an optical vortex with a helical phase structure. In quantum optics, photons with a twisted or helical phase structure will carry a quantized OAM. To our knowledge, however, so far, no experiment has demonstrated the fundamental property of the OAM at the single-photon level. In this Letter, we have demonstrated the average photon trajectories of twisted photons in a double-slit interference. We have experimentally captured the double-slit interference process of twisted photons by a time-gated intensified charge-coupled device camera, which is trigged by a heralded detection. Our work provides new perspectives for understanding the micro-behaviors of twisted particles and enables new applications in imaging and sensing.


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