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Optimal measurement bases for Bell tests based on the Clauser-Horne inequality
University of Concepcion.
University of Concepcion.
University of Federal Minas Gerais.
Linköping University, Department of Mathematics, Applied Mathematics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-1082-8325
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2012 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 85, no 1, 012105- p.Article in journal (Refereed) Published
Abstract [en]

The Hardy test of nonlocality can be seen as a particular case of the Bell tests based on the Clauser-Horne (CH) inequality. Here we stress this connection when we analyze the relation between the CH-inequality violation, its threshold detection efficiency, and the measurement settings adopted in the test. It is well known that the threshold efficiencies decrease when one considers partially entangled states and that the use of these states, unfortunately, generates a reduction in the CH violation. Nevertheless, these quantities are both dependent on the measurement settings considered, and in this paper we show that there are measurement bases which allow for an optimal situation in this trade-off relation. These bases are given as a generalization of the Hardy measurement bases, and they will be relevant for future Bell tests relying on pairs of entangled qubits.

Place, publisher, year, edition, pages
American Physical Society , 2012. Vol. 85, no 1, 012105- p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-74847DOI: 10.1103/PhysRevA.85.012105ISI: 000299265600001OAI: oai:DiVA.org:liu-74847DiVA: diva2:496586
Note
Funding Agencies|FAPEMIG||INCT-IQ|||Milenio P10-030-F||FONDECYT 11085055||FONDECYT 1080383||PFB08024|Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2017-12-07

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Larsson, Jan-Åke

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Citation style
  • apa
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