Bell inequalities resistant to detector inefficiency
نویسندگان
چکیده
منابع مشابه
Tests of Bell inequalities
According to recent reports, the last loopholes in testing Bell’s inequality are closed. It is argued that the really important task in this field has not been tackled yet and that the leading experiments claiming to close locality and detection efficiency loopholes, although making very significant progress, have conceptual drawbacks. The important task is constructing quantum devices which wi...
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Bell proved in 1965 [ 1 ] that nonlocality is an unavoidable property of quantum theory. By assuming locality, he derived a set of inequalities which, he then showed. are violated by the predictions of quantum theory. Since then a number of different Bell inequalities have been discovered, the most important of these are the Clauser, Horne, Shimony, and Holt (CHSH ) inequalities [ 21 derived in...
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A Bell inequality defined for a specific experimental configuration can always be extended to a situation involving more observers, measurement settings, or measurement outcomes. In this article, such “liftings” of Bell inequalities are studied. It is shown that if the original inequality defines a facet of the polytope of local joint outcome probabilities then the lifted one also defines a fac...
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Quantum state targeting is a quantum game which results from combining traditional quantum state estimation with additional classical information. We consider a particular version of the game and show how it can be played with maximally entangled states. The optimal solution of the game is used to derive a Bell inequality for two entangled qutrits. We argue that the nice properties of the inequ...
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Quantum error-correcting codes can protect multipartite quantum states from errors on some limited number of their subsystems (usually qubits). We construct a family of Bell inequalities which inherit this property from the underlying code and exhibit the violation of local realism, without any quantum information processing (except for the creation of an entangled state). This family shows no ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2002
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.66.052112