Quantum-coherent mixtures of causal relations
Jean-Philippe W. MacLean, Katja Ried, Robert W. Spekkens and 1 more
Nature Communications · 2017
doi:10.1038/ncomms15149 (opens in a new tab)
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Abstract
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.
Abstract licence: CC BY-NC-ND
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