Simultaneous Measurement of Fringe Visibility and Path Predictability of Wave-Particle Duality
Jie-Hui Huang1,2**, Tao Peng1, Luo-Jia Wang1, Shi-Yao Zhu1,3
1Texas A&M University, College Station, Texas 77843, USA 2College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022 3Department of Physics, Zhejiang University, Hangzhou 310027
Abstract：An experimental scheme to simultaneously obtain the information of fringe visibility and path predictability is designed. In a modified Young's double-slit experiment, two density filters rotating at different frequencies are placed before the two pineholes to encode path information. The spatial and temporal distributions of the output provide us with the wave and particle information of the single photons, respectively. The simultaneous measurement of the wave and particle information inevitably disturbs the system and thus causes some loss of the duality information, which is equal to the mixedness of the photonic state behind the density filters.
2018, Vol. 35 
