Person:
Luis Aina, Alfredo

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First Name
Alfredo
Last Name
Luis Aina
URI
https://hdl.handle.net/20.500.14352/75157
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Óptica
Area
Optica
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2020 - 20212
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Author: Masa, Elisa × Start date: 2020 ×

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Now showing 1 - 2 of 2
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    Nonclassical joint distributions and Bell measurements
    (Physics letters A, 2020) Masa, Elisa; Ares Santos, Laura; Luis Aina, Alfredo
    Derivation and experimental violation of Bell-like inequalities involve the measurement of incompatible observables. Simple complementarity forbids the existence of such joint probability distribution. Moreover, the measurement of incompatible observables requires different experimental procedures, which no necessarily must share a common joint statistics. In this work, we avoid these difficulties by proposing a joint simultaneous measurement. We can obtain the exact individual statistics of all the observables involved in the Bell inequalities after a suitable data inversion. A lack of positivity or any other pathology of the so retrieved joint distribution is then a signature of nonclassical behavior.
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    Inequalities for complementarity in observed statistics
    (Physics letters A, 2021) Masa, Elisa; Ares Santos, Laura; Luis Aina, Alfredo
    We provide an analysis of complementarity via a suitably designed classical model that leads to a set of inequalities that can be tested by means of unsharp measurements. We show that, if the measured statistics does not fulfill the inequalities it is equivalent to the lack of a joint distribution for the incompatible observables. This is illustrated by path-interference duality in a Young interferometer. (C) 2021 The Authors. Published by Elsevier B.V.