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arXiv · 1412.8745

Highly noise resistant multipartite quantum correlations

Wieslaw Laskowski·Tamas Vertesi·Marcin Wiesniak
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Abstract

We analyze robustness of correlations of the $N$-qubit GHZ and Dicke states against white noise admixture. For sufficiently large $N$, the Dicke states (for any number of excitations) lead to more robust violation of local realism than the GHZ states (e.g. for $N=9$ for the W state). We also identify states that are the most resistant to white noise. Surprisingly, it turns out that these states are partially product. As a by-product, we obtain a simple three-setting Bell inequality which is violated by any pure entangled state.

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Wieslaw Laskowski, Tamas Vertesi, Marcin Wiesniak. 2014-12-30. Highly noise resistant multipartite quantum correlations. https://doi.org/10.1088/1751-8113/48/35/355301

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