PIRSA:18020077

Video URL

https://pirsa.org/18020077

Recently discovered, stronger forms of quantum noncality

Aolita, L. (2018). Recently discovered, stronger forms of quantum noncality. Perimeter Institute for Theoretical Physics. https://pirsa.org/18020077

Aolita, Leandro. Recently discovered, stronger forms of quantum noncality. Perimeter Institute for Theoretical Physics, Feb. 06, 2018, https://pirsa.org/18020077 

          @misc{ scivideos_PIRSA:18020077,
            doi = {10.48660/18020077},
            url = {https://pirsa.org/18020077},
            author = {Aolita, Leandro},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Recently discovered, stronger forms of quantum noncality},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2018},
            month = {feb},
            note = {PIRSA:18020077 see, \url{https://scivideos.org/pirsa/18020077}}
          }

Leandro Aolita Universidade Federal do Rio de Janeiro

Talk numberPIRSA:18020077
DOI10.48660/18020077
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

In this talk I will discuss recently-identified classes of quantum correlations that go beyond nonlocal classical hidden-variable models equipped with communication. First, in the bipartite scenario, I will focus on so-called instrumental causal networks, which are a primal tool in causal inference. There, I will show that it is possible to “fake” classical causal influences with quantum common causes, in a formal sense quantified by the average causal effect (ACE). Furthermore, I will show that it is possible to violate instrumental inequalities with quantum resources, both in the device-independent and in the 1-sided device-independent settings. Second, in the multipartite setting, I will present a causal hierarchy of multipartite nonlocality. I will make special emphasis on quantum correlations in the upper classes of the hierarchy that define stronger forms of genuinely multipartite quantum non-locality than those previously known. The seminar will touch upon concepts like Bell nonlocality and quantum steering as well as Bayesian nets and causal inference.