PIRSA:20100029 Scientific Series Quantum Gravity

DOI10.48660/20100029

Series: Quantum Gravity

Marletto, C. (2020). Witnesses of non-classicality beyond quantum theory. Perimeter Institute. https://pirsa.org/20100029

Marletto, Chiara. Witnesses of non-classicality beyond quantum theory. Perimeter Institute, Oct. 08, 2020, https://pirsa.org/20100029 

@misc{ pirsa_PIRSA:20100029,
  doi = {10.48660/20100029},
  url = {https://pirsa.org/20100029},
  author = {Marletto, Chiara},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Witnesses of non-classicality beyond quantum theory},
  publisher = {Perimeter Institute},
  year = {2020},
  month = {oct},
  note = {PIRSA:20100029 see, \url{https://pirsa.org}}
}

Abstract

I discuss general argument to show that if a physical system can mediate locally the generation of entanglement between two quantum systems, then it itself must be non-classical. Remarkably, the argument does not assume any classical or quantum formalism to describe the mediating physical system: the result follows from general information-theoretic principles. This argument provides a robust and general theoretical basis for recently proposed tests of non-classicality in gravity, based on witnessing gravitationally-induced entanglement in quantum probes.

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