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Experimental test of maximal tripartite nonlocality using an entangled state and local measurements that are maximally incompatible
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics. Damietta University, Egypt.
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 42019 (English)In: Physical Review A: covering atomic, molecular, and optical physics and quantum information, ISSN 2469-9926, E-ISSN 2469-9934, Vol. 100, no 2, article id 022104Article in journal (Refereed) Published
Abstract [en]

The only known qubit states that produce maximal quantum violation of a tight Bell inequality with maximally incompatible local measurements are Bell states, Greenberger-Horne-Zeilinger states, and a recently identified three-qubit state called vertical bar S >. Here we report the results of an experiment for preparing vertical bar S > and testing the maximum quantum violation of the corresponding tripartite Bell inequality. Using a heralded source of three entangled photons and three tunable polarization-dependent filters, we experimentally prepare vertical bar S > with 0.924 fidelity. Using maximally incompatible measurements for the three parties, we observe a value of T-26 = 7.30 +/- 0.06, which clearly violates the tight Bell inequality T-26 <= 5. In addition, we show that our setup allows preparing multipartite states that were inaccessible with previous methods and are useful for quantum information and metrology.

Place, publisher, year, edition, pages
2019. Vol. 100, no 2, article id 022104
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-171955DOI: 10.1103/PhysRevA.100.022104ISI: 000478952700001OAI: oai:DiVA.org:su-171955DiVA, id: diva2:1348581
Available from: 2019-09-04 Created: 2019-09-04 Last updated: 2019-09-04Bibliographically approved

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Anwer, HammadNawareg, MohamedBourennane, Mohamed
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