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Minimum Detection Efficiency for a Loophole-Free Atom-Photon Bell Experiment
Departamento de Física Aplicada II Universidad de Sevilla, Spain.
Linköping University, The Institute of Technology. Linköping University, Department of Mathematics, Applied Mathematics.ORCID iD: 0000-0002-1082-8325
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 98, 220402-1-4 p.Article in journal (Refereed) Published
Abstract [en]

In Bell experiments, one problem is to achieve high enough photodetection to ensure that there is no possibility of describing the results via a local hidden-variable model. Using the Clauser-Horne inequality and a two-photon nonmaximally entangled state, a photodetection efficiency higher than 0.67 is necessary. Here we discuss atom-photon Bell experiments. We show that, assuming perfect detection efficiency of the atom, it is possible to perform a loophole-free atom-photon Bell experiment whenever the photodetection efficiency exceeds 0.50.

Place, publisher, year, edition, pages
2007. Vol. 98, 220402-1-4 p.
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URN: urn:nbn:se:liu:diva-38584DOI: 10.1103/PhysRevLett.98.220402Local ID: 44809OAI: diva2:259433
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2016-08-31

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Larsson, Jan-Åke
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The Institute of TechnologyApplied Mathematics
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