Experimental verification of multipartite entanglement in quantum networks

W. McCutcheon, A. Pappa, B. A. Bell, A. McMillan, A. Chailloux, T. Lawson, M. Mafu, D. Markham, E. Diamanti, I. Kerenidis, J. G. Rarity, M. S. Tame

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Multipartite entangled states are a fundamental resource for a wide range of quantum information processing tasks. In particular, in quantum networks, it is essential for the parties involved to be able to verify if entanglement is present before they carry out a given distributed task. Here we design and experimentally demonstrate a protocol that allows any party in a network to check if a source is distributing a genuinely multipartite entangled state, even in the presence of untrusted parties. The protocol remains secure against dishonest behaviour of the source and other parties, including the use of system imperfections to their advantage. We demonstrate the verification protocol in a three- and four-party setting using polarization-entangled photons, highlighting its potential for realistic photonic quantum communication and networking applications.

Original languageEnglish
Article number13251
JournalNature Communications
Volume7
DOIs
Publication statusPublished - Nov 9 2016

Fingerprint

Optics and Photonics
Automatic Data Processing
Photons
Network protocols
quantum communication
distributing
Quantum communication
resources
photonics
Photonics
defects
photons
polarization
Polarization
Defects

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

McCutcheon, W., Pappa, A., Bell, B. A., McMillan, A., Chailloux, A., Lawson, T., ... Tame, M. S. (2016). Experimental verification of multipartite entanglement in quantum networks. Nature Communications, 7, [13251]. https://doi.org/10.1038/ncomms13251
McCutcheon, W. ; Pappa, A. ; Bell, B. A. ; McMillan, A. ; Chailloux, A. ; Lawson, T. ; Mafu, M. ; Markham, D. ; Diamanti, E. ; Kerenidis, I. ; Rarity, J. G. ; Tame, M. S. / Experimental verification of multipartite entanglement in quantum networks. In: Nature Communications. 2016 ; Vol. 7.
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McCutcheon, W, Pappa, A, Bell, BA, McMillan, A, Chailloux, A, Lawson, T, Mafu, M, Markham, D, Diamanti, E, Kerenidis, I, Rarity, JG & Tame, MS 2016, 'Experimental verification of multipartite entanglement in quantum networks', Nature Communications, vol. 7, 13251. https://doi.org/10.1038/ncomms13251

Experimental verification of multipartite entanglement in quantum networks. / McCutcheon, W.; Pappa, A.; Bell, B. A.; McMillan, A.; Chailloux, A.; Lawson, T.; Mafu, M.; Markham, D.; Diamanti, E.; Kerenidis, I.; Rarity, J. G.; Tame, M. S.

In: Nature Communications, Vol. 7, 13251, 09.11.2016.

Research output: Contribution to journalArticle

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McCutcheon W, Pappa A, Bell BA, McMillan A, Chailloux A, Lawson T et al. Experimental verification of multipartite entanglement in quantum networks. Nature Communications. 2016 Nov 9;7. 13251. https://doi.org/10.1038/ncomms13251