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Author Jacques, V. ♦ Lai, N. D. ♦ Dreau, A. ♦ Zheng, D. ♦ Chauvat, D. ♦ Treussart, F. ♦ Grangier, P. ♦ Roch, J-F
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-07-31
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Quantum Physics ♦ physics:quant-ph
Abstract A recent experiment performed by S. S. Afshar et al. has been interpreted as a violation of Bohr's complementarity principle between interference visibility and which-path information 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 interference visibility V and which-path information, characterized by the distinguishability parameter D, are found to obey the complementarity relation V^2+D^2=<1. This result demonstrates that the experiment can be perfectly explained by the Copenhagen interpretation of quantum mechanics.
Description Reference: New J. Phys. 10, 123009 (2008)
Educational Use Research
Learning Resource Type Article
Page Count 11


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