Quantum-coherent mixtures of causal relations

The set of causal relations that can connect two systems is much richer in the quantum world. Here the authors show that it is possible to have a coherent mixture of a cause-effect and a common-cause mechanism between two systems, realizing this in a quantum optics experiment.

Bibliographic Details
Main Authors: Jean-Philippe W. MacLean, Katja Ried, Robert W. Spekkens, Kevin J. Resch
Format: Article
Language:English
Published: Nature Publishing Group 2017-05-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/ncomms15149
Description
Summary:The set of causal relations that can connect two systems is much richer in the quantum world. Here the authors show that it is possible to have a coherent mixture of a cause-effect and a common-cause mechanism between two systems, realizing this in a quantum optics experiment.
ISSN:2041-1723