Witnessing non-classicality beyond quantum theory
- URL: http://arxiv.org/abs/2003.07974v3
- Date: Sun, 9 Aug 2020 13:41:05 GMT
- Title: Witnessing non-classicality beyond quantum theory
- Authors: Chiara Marletto, Vlatko Vedral
- Abstract summary: We show that if a physical system can mediate locally the generation of entanglement between two quantum systems, then it itself must be non-classical.
We do not assume any classical or quantum formalism to describe the mediating physical system.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose a 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, we do not assume any classical or
quantum formalism to describe the mediating physical system: our result follows
from general information-theoretic principles, drawn from the recently proposed
constructor theory of information. This argument provides the indispensable
theoretical basis for recently proposed tests of non-classicality in gravity,
based on witnessing gravitationally-induced entanglement in quantum probes.
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