Illustration of quantum complementarity using single photons interfering on a grating

  title={Illustration of quantum complementarity using single photons interfering on a grating},
  author={Vincent Jacques and Ngoc Diep Lai and Ana{\"i}s Dr{\'e}au and Dingwei Zheng and Dominique Chauvat and Franccois Treussart and Philippe Grangier and Jean-François Roch},
  journal={New Journal of Physics},
A recent experiment performed by Afshar et al (2007 Found. Phys. 37 295-305) has been interpreted as a violation of Bohr's complementarity principle between interference visibility and which-path information (WPI) in a two-path interferometer. We have reproduced this experiment, using true single- photon pulses propagating in a two-path wavefront-splitting interferometer realized with a Fresnel's biprism, and followed by a grating with adjustable transmitting slits. The measured values of… 

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