PIRSA:24050009

Emergence of noncontextuality under quantum darwinism

Amaral, B. (2024). Emergence of noncontextuality under quantum darwinism. Perimeter Institute. https://pirsa.org/24050009

Amaral, Barbara. Emergence of noncontextuality under quantum darwinism. Perimeter Institute, May. 02, 2024, https://pirsa.org/24050009 

          @misc{ pirsa_PIRSA:24050009,
            doi = {10.48660/24050009},
            url = {https://pirsa.org/24050009},
            author = {Amaral, Barbara},
            keywords = {Quantum Information},
            language = {en},
            title = {Emergence of noncontextuality under quantum darwinism},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {may},
            note = {PIRSA:24050009 see, \url{https://pirsa.org}}
          }

Barbara Amaral

Universidade de São Paulo

Talk number
PIRSA:24050009
Collection
Talk Type
Subject
Abstract
Quantum Darwinism proposes that the proliferation of redundant information plays a major role in the emergence of objectivity out of the quantum world. Is this kind of objectivity necessarily classical? We show that if one takes Spekkens’s notion of noncontextuality as the notion of classicality and the approach of Brandão, Piani, and Horodecki to quantum Darwinism, the answer to the above question is “‘yes,” if the environment encodes the proliferated information sufficiently well. Moreover, we propose a threshold on this encoding, above which one can unambiguously say that classical objectivity has emerged under quantum Darwinism.