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Detection of N-particle entanglement with generalized Bell inequalities

Wieslaw Laskowski·Marek Zukowski
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Abstract

We show that the generalized Bell-type inequality, explicitly involving rotational symmetry of physical laws, is very efficient in distinguishing between true N-particle quantum correlations and correlations involving less particles. This applies to various types of generalized partial separabilities. We also give a rigorous proof that the new Bell inequalities are maximally violated by the GHZ states, and find a very handy description of the N-qubit correlation function.

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Wieslaw Laskowski, Marek Zukowski. 2006-01-05. Detection of N-particle entanglement with generalized Bell inequalities. https://doi.org/10.1103/physreva.72.062112

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