Entanglement, quantum correlations and beyond

Entanglement is a central concept to quantum science, as the properties of multipartite quantum systems cannot be inferred from the features of their components. Yet, entanglement cannot fully explain the intricate structures and dynamics of multipartite quantum systems. Even highly noisy quantum states with no entanglement can display quantum correlations! Also, the notion of multipartite correlations, manifesting in three or more interacting systems, is still under debate.  We invent sophisticated measures that evaluate how much information is stored in quantum networks. The results provide insights on the fundamental constituents of Nature. For example, we prove fundamental theorems about the inherent fragility of quantum correlations, which explain how a classical macroscopic reality is consistent with a microscopic quantum world. Furthermore, they improve our understanding of how quantum particles interact, enabling to evaluate the power of large-scale quantum machines.
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D. Girolami, C. Susa and T. Tufarelli, Phys. Rev. Lett. 119, 140505 (2017)
D. Girolami, A. M Souza, V. Giovannetti, T. Tufarelli, J. G. Filgueiras, R. S. Sarthour, D. O. Soares-Pinto, I. S. Oliveira and G. Adesso, Phys. Rev. Lett. 112, 210401 (2014), Editors’ Suggestion
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