Multipartite entanglement percolation

S. Perseguers, D. Cavalcanti, G. J. Lapeyre, Jr., M. Lewenstein, and A. Acín
Phys. Rev. A 81, 032327 – Published 26 March 2010

Abstract

We present a percolation strategy based on multipartite measurements to propagate entanglement in quantum networks. We consider networks spanned on regular lattices whose bonds correspond to pure but nonmaximally entangled pairs of qubits, with any quantum operation allowed at the nodes. Despite significant effort in the past, improvements over standard (classical) percolation have been found for only a few lattices, often with restrictions on the initial amount of entanglement in the bonds. In contrast, multipartite entanglement percolation outperform the classical percolation protocols, as well as all previously known quantum ones, over the entire range of initial entanglement and for every lattice that we considered. Finally, we briefly show that our ideas also find application in noisy networks.

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  • Received 27 October 2009

DOI:https://doi.org/10.1103/PhysRevA.81.032327

©2010 American Physical Society

Authors & Affiliations

S. Perseguers1, D. Cavalcanti2,4, G. J. Lapeyre, Jr.2, M. Lewenstein2,3, and A. Acín2,3

  • 1Max-Planck–Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
  • 2ICFO–Institut de Ciències Fotòniques, Mediterranean Technology Park, E-08860 Castelldefels, Spain
  • 3ICREA-Institució Catalana de Recerca i Estudis Avançats, Lluis Companys 23, E-08010 Barcelona, Spain
  • 4Center for Quantum Technologies, National University of Singapore, Singapore

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Issue

Vol. 81, Iss. 3 — March 2010

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