Kochen-Specker contextuality

Autor(en)

Costantino Budroni, Adan Cabello, Otfried Gühne, Matthias Kleinmann, Jan-Ake Larsson

Abstrakt

A central result in the foundations of quantum mechanics is the Kochen-Specker theorem. In short, it states that quantum mechanics is in conflict with classical models in which the result of a measurement does not depend on which other compatible measurements are jointly performed. Here compatible measurements are those that can be implemented simultaneously or, more generally, those that are jointly measurable. This conflict is generically called quantum contextuality. In this review, an introduction to this subject and its current status is presented. Several proofs of the Kochen-Specker theorem and different notions of contextuality are reviewed. How to experimentally test some of these notions is explained, and connections between contextuality and nonlocality or graph theory are discussed. Finally, some applications of contextuality in quantum information processing are reviewed.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Università degli Studi di Pisa, Österreichische Akademie der Wissenschaften (ÖAW), Universidad de Sevilla, Universität Siegen, Linköping University

Journal

Reviews of Modern Physics

Band

94

Anzahl der Seiten

62

ISSN

0034-6861

DOI

https://doi.org/10.1103/RevModPhys.94.045007

Publikationsdatum

12-2022

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4b4c5b53-d465-4b2e-a1b2-05f31dbc106e