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arXiv · 0909.0789

Experimental violation of Svetlichny's inequality

Jonathan Lavoie·Rainer Kaltenbaek·Kevin J. Resch
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Abstract

It is well known that quantum mechanics is incompatible with local realistic theories. Svetlichny showed, through the development of a Bell-like inequality, that quantum mechanics is also incompatible with a restricted class of nonlocal realistic theories for three particles where any two-body nonlocal correlations are allowed [Phys. Rev. D 35, 3066 (1987)]. In the present work, we experimentally generate three-photon GHZ states to test Svetlichny's inequality. Our states are fully characterized by quantum state tomography using an overcomplete set of measurements and have a fidelity of (84+/-1)% with the target state. We measure a convincing, 3.6 std., violation of Svetlichny's inequality and rule out this class of restricted nonlocal realistic models.

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Jonathan Lavoie, Rainer Kaltenbaek, Kevin J. Resch. 2009-09-04. Experimental violation of Svetlichny's inequality. https://doi.org/10.1088/1367-2630%2F11%2F7%2F073051

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