Maximal violation of Bell inequalities using continuous-variable measurements

We propose a whole family of physical states that yield a maximal violation of Bell inequalities, when using quadrature-phase homodyne detection. This result is based on a binning process called root binning, that is used to transform the continuous-variable measurements into binary results needed f...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-01, Vol.67 (1), Article 012105
Main Authors: Wenger, Jérôme, Hafezi, Mohammad, Grosshans, Frédéric, Tualle-Brouri, Rosa, Grangier, Philippe
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
BELL THEOREM
DETECTION
ENERGY LEVELS
QUADRATURES
QUANTUM MECHANICS
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Summary:We propose a whole family of physical states that yield a maximal violation of Bell inequalities, when using quadrature-phase homodyne detection. This result is based on a binning process called root binning, that is used to transform the continuous-variable measurements into binary results needed for the tests of quantum mechanics versus local realistic theories. A physical process in order to produce such states is also suggested. The use of high-efficiency spacelike separated homodyne detections with these states and this binning process would result in a conclusive loophole-free test of quantum mechanics.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.67.012105