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Quantum correlations in connected multipartite Bell experiments
Stockholm University, Faculty of Science, Department of Physics. ICFO-Institut de Ciencies Fotoniques, Spain; University of California, USA.
Number of Authors: 1
2016 (English)In: Journal of Physics A: Mathematical and Theoretical, ISSN 1751-8113, E-ISSN 1751-8121, Vol. 49, no 14, 145304Article in journal (Refereed) Published
Abstract [en]

Bell experiments measure correlations between outcomes of a number of observers measuring on a shared physical state emitted from a single source. Quantum correlations arising in such Bell experiments have been intensively studied over the last decades. Much less is known about the nature of quantum correlations arising in network structures beyond Bell experiments. Such networks can involve many independent sources emitting states to observers in accordance with the network configuration. Here, we will study classical and quantum correlations in a family of networks which can be regarded as compositions of several independent multipartite Bell experiments connected together through a central node. For such networks we present tight Bell-type inequalities which are satisfied by all classical correlations. We study properties of the violations of our inequalities by probability distributions arising in quantum theory.

Place, publisher, year, edition, pages
2016. Vol. 49, no 14, 145304
Keyword [en]
quantum correlations, Bell inequality, quantum network
National Category
Physical Sciences Mathematics
URN: urn:nbn:se:su:diva-128473DOI: 10.1088/1751-8113/49/14/145304ISI: 000371251400018OAI: diva2:915424
Available from: 2016-03-30 Created: 2016-03-29 Last updated: 2016-03-30Bibliographically approved

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