Double-slit interference of single twisted photons  

作　　者：Wen-Rong Qi Rui Liu Ling-Jun Kong Zhou-Xiang Wang Shuang-Yin Huang Chenghou Tu Yongnan Li Hui-Tian Wang 齐文荣;刘瑞;孔令军;王周祥;黄双印;涂成厚;李勇男;王慧田(Key Laboratory of Weak-Light Nonlinear Photonics and School of Physics,Nankai University,Tianjin 300071,China;National Laboratory of Solid State Microstructures,School of Physics,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China)

机构地区：[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

出　　处：《Chinese Optics Letters》2020年第10期69-72,共4页中国光学快报（英文版）

基　　金：supported by the National Key R&D Program of China (Nos. 2017YFA0303800 and 2017YFA0303700);the National Natural Science Foundation of China (Nos. 11534006,11674184,and 11774183);the Natural Science Foundation of Tianjin(No. 16JCZDJC31300);the Collaborative Innovation Center of Extreme Optics

摘　　要：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.

关 键 词：orbital angular momnenturm double slit interference twisted photons helical phase 

分 类 号：O436.1[机械工程—光学工程]