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Genuine network quantum nonlocality and self-testing

Ivan Šupić, Jean-Daniel Bancal, Yu Cai, Nicolas Brunner

26/5/21 Published in : arXiv:2105.12341

The network structure offers in principle the possibility for novel forms of quantum nonlocal correlations, that are proper to networks and cannot be traced back to standard quantum Bell nonlocality. Here we define a notion of genuine network quantum nonlocality. Our approach is operational and views standard quantum nonlocality as a resource for producing correlations in networks. We show several examples of correlations that are genuine network nonlocal, considering the so-called bilocality network of entanglement swapping. In particular, we present an example of quantum self-testing which relies on the network structure; the considered correlations are non-bilocal, but are local according to the usual definition of Bell locality.

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  • Quantum Systems

Quantum speed-up in collisional battery charging

Full network nonlocality

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The National Centres of Competence in Research (NCCRs) are a funding scheme of the Swiss National Science Foundation

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