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arXiv · 1006.0500

Contextuality in Quantum Mechanics: Testing the Klyachko Inequality

Jeffrey Bub·Allen Stairs
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Abstract

The Klyachko inequality is an inequality for the probabiities of the values of five observables of a spin-1 particle, which is satisfied by any noncontextual assignment of values to this set of observables, but is violated by the probabilities defined by a certain quantum state. We describe an experiment between two entangled spin-1 particles to test contextuality via a related inequality. We point out that a test of contextuality by measurements on a single particle to confirm the Klyachko inequality requires an assumption of non-disturbance by the measuring instrument, which is avoided in the two-particle experiment.

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Jeffrey Bub, Allen Stairs. 2010-06-02. Contextuality in Quantum Mechanics: Testing the Klyachko Inequality. https://arxiv.org/abs/1006.0500

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