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arXiv · 0911.4172

State-independent quantum violation of noncontextuality in four dimensional space using five observables and two settings

Alok Kumar Pan·Dipankar Home
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Abstract

Recently, a striking experimental demonstration [G. Kirchmair \emph{et al.}, Nature, \textbf{460}, 494(2009)] of the state-independent quantum mechanical violation of non-contextual realist models has been reported for any two-qubit state using suitable choices of \emph{nine} product observables and \emph{six} different measurement setups. In this report, a considerable simplification of such a demonstration is achieved by formulating a scheme that requires only \emph{five} product observables and \emph{two} different measurement setups. It is also pointed out that the relevant empirical data already available in the experiment by Kirchmair \emph{et al.} corroborate the violation of the NCR models in accordance with our proof.

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Alok Kumar Pan, Dipankar Home. 2009-11-21. State-independent quantum violation of noncontextuality in four dimensional space using five observables and two settings. https://doi.org/10.1140/epjd%2Fe2012-20165-y

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