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8 October 2015 Mapping and violating Bell inequality with entangled photons
David A. Guzmán, Leonardo J. Uribe, Alejandra Valencia, Ferney J. Rodríguez, Luis Quiroga
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Proceedings Volume 9793, Education and Training in Optics and Photonics: ETOP 2015; 979324 (2015) https://doi.org/10.1117/12.2223197
Event: Education and Training in Optics and Photonics: ETOP 2015, 2015, Bordeaux, France
Abstract
In 1964, J. Bell introduced an inequality that stated a mathematical bound for any physical system that holds both locality and realism; if we violate this inequality, it is clear that we have to reconsider the previous statement. In our work, we report an experimental activity with photons suitable for undergraduate students that makes them question these naïve ideas of nature’s behavior. With a pre-aligned setup, our students tested and violated Bell’s inequality in a two-hour laboratory session, using two distant photons entangled in polarization. In addition, complementing an educational approach to this phenomenon, the usually called S function, that quantifies correlations, was mapped using different detection angles in one of the two locations. In particular, a more complete picture of the S function, allow us to identify the initial state of light. We show in this work that it is possible for undergraduate students to question some of our common sense ideas of nature using experiments with photons.
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David A. Guzmán, Leonardo J. Uribe, Alejandra Valencia, Ferney J. Rodríguez, and Luis Quiroga "Mapping and violating Bell inequality with entangled photons", Proc. SPIE 9793, Education and Training in Optics and Photonics: ETOP 2015, 979324 (8 October 2015); https://doi.org/10.1117/12.2223197
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KEYWORDS
Photons
Polarization
Quantum mechanics
Quantum optics
Photon polarization
Wave plates
Education and training
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