Chinese Optics Letters, 2020, 18 (10): 102601, Published Online: Aug. 3, 2020  

Double-slit interference of single twisted photons Download: 773次

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

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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