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- Cabello, Adan, et al.
(författare)
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Simple Hardy-Like Proof of Quantum Contextuality
- 2013
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 111:18, s. 180404-
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Tidskriftsartikel (refereegranskat)abstract
- Contextuality and nonlocality are two fundamental properties of nature. Hardy's proof is considered the simplest proof of nonlocality and can also be seen as a particular violation of the simplest Bell inequality. A fundamental question is: Which is the simplest proof of contextuality? We show that there is a Hardy-like proof of contextuality that can also be seen as a particular violation of the simplest noncontextuality inequality. Interestingly, this new proof connects this inequality with the proof of the Kochen-Specker theorem, providing the missing link between these two fundamental results, and can be extended to an arbitrary odd number n of settings, an extension that can be seen as a particular violation of the n-cycle inequality.
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