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Two Fundamental Experimental Tests of Nonclassicality with Qutrits

Ahrens, Johan (author)
Stockholms universitet,Fysikum
Amselem, Elias (author)
Stockholms universitet,Fysikum
Cabello, Adan (author)
Stockholms universitet,Fysikum,University of Sevilla, Spain
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Bourennane, Mohamed (author)
Stockholms universitet,Fysikum
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 (creator_code:org_t)
2013-07-10
2013
English.
In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 3
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We report two fundamental experiments on three-level quantum systems (qutrits). The first one tests the simplest task for which quantum mechanics provides an advantage with respect to classical physics. The quantum advantage is certified by the violation of Wright's inequality, the simplest classical inequality violated by quantum mechanics. In the second experiment, we obtain contextual correlations by sequentially measuring pairs of compatible observables on a qutrit, and show the violation of Klyachko et al.'s inequality, the most fundamental noncontextuality inequality violated by qutrits. Our experiment tests exactly Klyachko et al.'s inequality, uses the same measurement procedure for each observable in every context, and implements the sequential measurements in any possible order.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

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fysik
Physics

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Ahrens, Johan
Amselem, Elias
Cabello, Adan
Bourennane, Moha ...
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NATURAL SCIENCES
NATURAL SCIENCES
and Physical Science ...
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Stockholm University

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