Minimum Detection Efficiency for a Loophole-Free Atom-Photon Bell Experiment
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 98, 220402-1-4 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:liu:diva-38584DOI: 10.1103/PhysRevLett.98.220402Local ID: 44809OAI: oai:DiVA.org:liu-38584DiVA: diva2:259433