Two Fundamental Experimental Tests of Nonclassicality with Qutrits

Ahrens, Johan; Amselem, Elias; Cabello, Adán; Bourennane, Mohamed

doi:10.48550/arxiv.1301.2887

Cited by 9 publications

(16 citation statements)

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“…The experimental tests of the three inequalities show that quantum nonlocality can actually be observed through the violation of any of these elementary logical Bell inequalities. In addition, our experiments show how pentagonal NC inequalities can be violated without the compatibility loophole [21] affecting previous experiments carried out by performing sequential tests on the same system [15,16]. In our experiments, the spatial separation between the first and the second test guarantees perfect compatibility without further assumptions.…”

Section: Experimental Testsmentioning

confidence: 70%

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Bell inequalities for the simplest exclusivity graph

et al. 2013

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Which is the simplest logical structure for which there is quantum nonlocality? We show that there are only three bipartite Bell inequalities with quantum violation associated with the simplest graph of relationships of exclusivity with a quantum-classical gap. These are the most elementary logical Bell inequalities. We show that the quantum violation of some well-known Bell inequalities is related to them. We test the three Bell inequalities with pairs of polarization-entangled photons and report violations in good agreement with the quantum predictions. Unlike other experiments testing noncontextuality inequalities with pentagonal exclusivity, the ones reported here are free of the compatibility loophole.Comment: REVTeX4, 6 pages, 4 figure

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Section: Experimental Testsmentioning

confidence: 70%

“…Its exclusivity structure was already discussed by Wright [12] in the 1970s. Moreover, C 5 is the graph behind a fundamental NC inequality for a single qutrit identified by Klyachko, Can, Binicioglu, and Shumovski (KCBS) [13,14], and tested in experiments with sequential measurements [15,16].…”

Section: Introductionmentioning

confidence: 99%

Bell inequalities for the simplest exclusivity graph

et al. 2013

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“…In a more recent work [22], by applying the exclusivity principle to two copies of the Klyachko-Can-Binicioglu-Shumovsky (KCBS) [6] experiments, Cabello showed that the upper bound of KCBS inequality for QM is exactly the maximum value allowed by the EP. The quantum violation of KCBS inequality has been experimentally tested with photons [33,34]. However, when applying this principle to multiple copies of Clauser-Horne-Shimony-Holt(CHSH) experiments, the answer lead to an open question in graph theory.…”

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confidence: 99%

Quantum Correlations are Tightly Bound by the Exclusivity Principle

Yan

2013

Phys. Rev. Lett.

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It is a fundamental problem in physics of what principle limits the correlations as predicted by our current description of nature, based on quantum mechanics. One possible explanation is the "global exclusivity" principle recently discussed in Phys. Rev. Lett. 110, 060402 (2013). In this work we show that this principle actually has a much stronger restriction on the probability distribution. We provide a tight constraint inequality imposed by this principle and prove that this principle singles out quantum correlations in scenarios represented by any graph. Our result implies that the exclusivity principle might be one of the fundamental principles of nature.

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“…We begin with a game where systems exhibiting quantum contextuality can be interpreted as resource states which can boost the chances of winning [29].…”

Section: Wright's Inequalitymentioning

confidence: 99%

Recent Advances in Contextuality Tests

Thompson

Kurzyński

Lee

et al. 2016

Open Syst. Inf. Dyn.

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Our everyday experiences support the hypothesis that physical systems exist independently of the act of observation. Concordant theories are characterized by the objective realism assumption whereby the act of measurement simply reveals preexisting well defined elements of reality. In stark contrast quantum mechanics portrays a world in which reality loses its objectivity and is in fact created by observation. Quantum contextuality as first discovered by Bell [Rev. Mod. Phys. 38, 447 (1966)] and Kochen-Specker [J. Math. Mech. 17, 59 (1967)] captures aspects of this philosophical clash between classical and quantum descriptions of the world. Here we briefly summarize some of the more recent advances in the field of quantum contextuality. We approach quantum contextuality through its close relation to Bell type nonlocal scenarios and highlight some of the rapidly developing tests and experimental implementations. * Electronic address: thompson.

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Two Fundamental Experimental Tests of Nonclassicality with Qutrits

Cited by 9 publications

References 0 publications

Bell inequalities for the simplest exclusivity graph

Bell inequalities for the simplest exclusivity graph

Quantum Correlations are Tightly Bound by the Exclusivity Principle

Recent Advances in Contextuality Tests

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