A study on almost quantum correlations

Author(s)

Vitor Lucas de Oliveira Sena

• Document type: Master's Dissertation
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin
• Defense date: 2024-03-19

Examining board members

Rafael Luiz da Silva Rabelo; Ricardo Luís Doretto; Rafael Chaves Souto Araújo

• Advisor: Rafael Luiz da Silva Rabelo

Abstract

A good way to investigate the foundations of quantum theory is through the correlations it allows between measurement outcomes performed on spatially separated systems. Such correlations may exhibit a non-classical phenomenon known as Bell nonlocality. Interestingly, the set of nonlocal correlations permitted by quantum theory is very specific and special. There exists a slightly larger set of correlations known as the set of almost quantum correlations, which shares several similarities with the set of quantum correlations, especially in its algebraic definition and its validity in the face of physical principles: the device-independent principles. However, they are still distinct sets. In this work, we assess the similarities and differences between these two sets, while reviewing the essential concepts to understand them, and employ a new method to compare them using their relative volumes (AU)

• FAPESP's process: 21/05981-6 - On almost quantum correlations
• Grantee: Vitor Lucas de Oliveira Sena
• Support Opportunities: Scholarships in Brazil - Master