Non-bilocality in quantum networks

• Grant number: 20/06925-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2020
• End date: May 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Principal Investigator: Rafael Luiz da Silva Rabelo
• Grantee: Pedro Nóbrega Lauand
• Host 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

Entanglement and Bell nonlocality are intrinsically related concepts, although parts of a complex relationship that still needs better understanding. There are several distinct directions to investigate this relation: one of them is by means of the study of correlations created with entangled quantum systems shared in multipartite networks. In this scenario, one can observe the activation of nonlocality for some local quantum states. Also, interestingly, one can observe quantum correlations that, even without showing any sign of nonlocality, cannot be reproduced by analogous classical systems. In this project, the goal is to investigate the simplest of scenarios in which one can observe such separation and to obtain new examples of entangled quantum states that are capable of presenting such nonclassical correlations, so-called bilocal.