Illustration of quantum complementarity using single photons interfering on a grating
| Autor: | Jacques, V., Lai, N. D., Dreau, A., Zheng, D., Chauvat, D., Treussart, F., Grangier, P., Roch, J-F |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | New J. Phys. 10, 123009 (2008) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1367-2630/10/12/123009 |
| Popis: | 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. Comment: 11 pages, 5 figures |
| Databáze: | arXiv |
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