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arXiv · 0712.3666

Extending Bell inequalities to more parties

Yu-Chun Wu·Piotr Badziag·Marcin Wieśniak·Marek Żukowski
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Abstract

We describe a method of extending Bell inequalities from $n$ to $n+1$ parties and formulate sufficient conditions for our method to produce tight inequalities from tight inequalities. The method is non trivial in the sense that the inequalities produced by it, when applied to entangled quantum states may be violated stronger than the original inequalities. In other words, the method is capable of generating inequalities which are more powerfull indicators of non-classical correlations than the original inequalities.

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Yu-Chun Wu, Piotr Badziag, Marcin Wieśniak, Marek Żukowski. 2008-05-06. Extending Bell inequalities to more parties. https://doi.org/10.1103/physreva.77.032105

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