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Bell nonlocality and Kochen-Specker contextuality

Grant number: 21/01502-6
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2021
Effective date (End): August 31, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - General Physics
Principal researcher:Rafael Luiz da Silva Rabelo
Grantee:André Saugo Mazzari
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:18/07258-7 - Entanglement, bell nonlocality, and physical principles for quantum theory, AP.JP

Abstract

Bell nonlocality and Kochen-Specker contextuality are two of the most important concepts of the foundations of quantum theory. Despite being distinct concepts, both are related to correlations that can be observed in quantum systems, that, however, cannot be explained by means of 'classical' mechanisms. It is well known that, in some cases, it is not possible to observe both phenomena in the same experiment. In such cases, there is, thus, a 'monogamy' relation between them. However, this relation is not universal, and there are cases in which it is possible to observe both phenomena in the same experiment. It is not clear, though, which are the necessary and/or sufficient conditions for the existence of monogamy relations between contextuality and nonlocality. The investigation of this question is the conducting thread of this project, which also has the complementary goal of exploring possible applications of the simultaneous observation of Bell nonlocality and Kochen-Specker contextuality in the certification of quantum properties of uncharacterised preparation and /or measurement devices. (AU)

News published in Agência FAPESP Newsletter about the scholarship: