Bounding temporal quantum correlations
Costantino Budroni, Tobias Moroder, Matthias Kleinmann, Otfried, G\"uhne
TL;DR
This paper introduces a general method for analyzing and computing maximal temporal quantum correlations in sequential measurements, advancing understanding of fundamental quantum phenomena like Leggett-Garg and Kochen-Specker scenarios.
Contribution
It provides a comprehensive framework to analyze temporal quantum correlations, including full characterization in key foundational scenarios.
Findings
Maximal correlations in Leggett-Garg scenario computed
Complete characterization of Kochen-Specker related measurements
New tools for analyzing sequential quantum measurements
Abstract
Sequential measurements on a single particle play an important role in fundamental tests of quantum mechanics. We provide a general method to analyze temporal quantum correlations, which allows us to compute the maximal correlations for sequential measurements in quantum mechanics. As an application, we present the full characterization of temporal correlations in the simplest Leggett-Garg scenario and in the sequential measurement scenario associated with the most fundamental proof of the Kochen-Specker theorem.
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