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Proceedings Paper

Another loophole for the Bell inequalities
Author(s): Karl Otto Greulich
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Paper Abstract

Detecting non-locality requires almost ideal experimental conditions - ideal sources for entangled photon pairs and ideal detectors. Deviations from this ideal situation may critically hamper interpretations of experiments attempting to prove non-locality. Of two major known loopholes, the detector loophole is not yet unequivocally closed. Now another loophole emerges: When in such experiments down converting crystals with lasers as primary sources are used, exceeding threshold values in the Bell inequalities, i.e. their violation, can be caused by so far not fully recognized problems in the generation and detection of photon pairs. Taken together, nonlocality is still not yet unequivocally proven.

Paper Details

Date Published: 10 September 2009
PDF: 7 pages
Proc. SPIE 7421, The Nature of Light: What are Photons? III, 74210S (10 September 2009); doi: 10.1117/12.825893
Show Author Affiliations
Karl Otto Greulich, Fritz Lipmann Institute (Germany)


Published in SPIE Proceedings Vol. 7421:
The Nature of Light: What are Photons? III
Chandrasekhar Roychoudhuri; Al F. Kracklauer; Andrei Yu. Khrennikov, Editor(s)

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