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 and M. S. Tame ()
Additional contact information
W. McCutcheon: Quantum Engineering Technology Laboratory, University of Bristol
A. Pappa: School of Informatics, University of Edinburgh
B. A. Bell: Quantum Engineering Technology Laboratory, University of Bristol
A. McMillan: Quantum Engineering Technology Laboratory, University of Bristol
A. Chailloux: INRIA, Paris Rocquencourt, SECRET Project Team
T. Lawson: LTCI, CNRS, Telecom ParisTech, Université Paris-Saclay
M. Mafu: Botswana International University of Science and Technology
D. Markham: LTCI, CNRS, Telecom ParisTech, Université Paris-Saclay
E. Diamanti: LTCI, CNRS, Telecom ParisTech, Université Paris-Saclay
I. Kerenidis: CNRS IRIF, Université Paris 7
J. G. Rarity: Quantum Engineering Technology Laboratory, University of Bristol
M. S. Tame: School of Chemistry and Physics, University of KwaZulu-Natal

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: 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.

Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms13251 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13251

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms13251

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().