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Unexpected optimal measurement protocols in Bell's inequality violation experiments

Negre, Alicia and Mathevet, Renaud and Chalopin, Benoit and Massenot, Sébastien Unexpected optimal measurement protocols in Bell's inequality violation experiments. (2023) American Journal of Physics, 91 (1). 64-73. ISSN 0002-9505

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Official URL: https://doi.org/10.1119/5.0102516

Abstract

Bell's inequality violation experiments are becoming increasingly popular in the practical teaching of undergraduate and master's degree students. Bell's parameter S is obtained from 16 polarization correlation measurements performed on entangled photons pairs. We first report here a detailed analysis of the uncertainty u(S) of Bell's parameter taking into account coincidence count statistics and errors in polarizers' orientation. We show using both computational modeling and experimental measurement that the actual sequence of the polarizer settings has an unexpected and strong influence on the error budget. This result may also be relevant to measurements in other settings in which errors in parameters may have non-random effects in the measurement.

Item Type:Article
HAL Id:hal-03943241
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
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Deposited On:25 Jan 2023 10:47

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