Quantum superpositions of causal orders as an operational resource

Causal nonseparability refers to processes where events take place in a coherent superposition of different causal orders. These may be the key resource for experimental violations of causal inequalities and have been recently identified as resources for concrete information-theoretic tasks. Here, w...

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Bibliographic Details
Main Authors: Márcio M. Taddei, Ranieri V. Nery, Leandro Aolita
Format: Article
Language:English
Published: American Physical Society 2019-12-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.1.033174