Entanglement Percolation in Quantum Complex Networks

TitleEntanglement Percolation in Quantum Complex Networks
Publication TypeJournal Article
Year of Publication2009
AuthorsCuquet, M, Calsamiglia, J
JournalPhysical Review Letters
Date Published12/2009
Keywordscomplex networks, entanglement distribution, entanglement percolation, erdos-renyi, generating function, quantum complex networks, quantum networks, scale-free, small-world

Quantum networks are essential to quantum information distributed applications, and communicatingover them is a key challenge. Complex networks have richand intriguing properties, which are as yet unexplored in thequantum setting. Here, we study the effect of entanglement percolationas a means to establish long-distance entanglement between arbitrary nodesof quantum complex networks. We develop a theory to analyticallystudy random graphs with arbitrary degree distribution and give exactresults for some models. Our findings are in good agreementwith numerical simulations and show that the proposed quantum strategiesenhance the percolation threshold substantially. Simulations also show a clearenhancement in small-world and other real-world networks.

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