Demonstration of quantum correlations that are incompatible with absoluteness of measurement

نویسندگان

چکیده

Exploiting the tension between two dynamics of quantum theory (QT) in Wigner's Friend thought experiment, we point out that standard QT leads to inconsistency observed probabilities measurement outcomes superobservers: Wigner and his Student. To avoid such inconsistent predictions QT, hypothesize distinct perspectives. The first one is ``absoluteness (AoM),'' is, any process an absolute event irrespective other observers yields a single outcome. ``nonabsoluteness (NoM)'' as negation AoM. We introduce operational approach, with friend then spatially separated friends, test validity these perceptions without assuming details experiment. First, show set obtainable for NoM strictly larger than provide simplest scenario so far, involving preparation unitary operation by superobserver can demonstrate correlations incompatible Remarkably, observers, present strict hierarchy among sets following three theories: classical or local realist, AoM, NoM.

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ژورنال

عنوان ژورنال: Physical review

سال: 2023

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physreva.107.022226