Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 8: Quantum Information: Concepts and Methods II
Q 8.1: Vortrag
Montag, 6. März 2017, 17:00–17:15, P 2
Theory-independent conclusions from bipartite quantum correlations — •Matthias Kleinmann1, Tamás Vértesi2, and Adán Cabello3 — 1University of the Basque Country UPV/EHU, Bilbao, Spain — 2Hungarian Academy of Sciences, Debrecen, Hungary — 3University of Sevilla, Sevilla, Spain
Bell-inequalities enable us to test quantum theory against a particular class of alternative theories, the local hidden variable models. Recent experiments have thoroughly ruled out these models. In the same spirit we investigate a different set of nonsignaling theories, in which measurements of many outcomes are constructed by selecting from two-outcome measurements. We derive tight inequalities for this set of theories and show that experiments using current quantum technology can demonstrate a violation of these inequalities. This makes it possible to perform tests of the structure of measurements, independent of the underlying theory. Our method also generalizes to other traits of quantum theory and as an example we present a theory-independent test of the compatibility structure occurring in quantum theory.