Experimental multipartite entanglement and randomness certification of the W state in the quantum steering scenario

Alejandro Máttar, Paul Skrzypczyk, G. H. Aguilar, R. V. Nery, P. H Souto Ribeiro, S. P. Walborn, Daniel Cavalcanti

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)
196 Downloads (Pure)

Abstract

Recently [Cavalcanti et al. Nat Commun 6, 7941 (2015)] proposed a method to certify the presence of entanglement in asymmetric networks, where some users do not have control over the measurements they are performing. Such asymmetry naturally emerges in realistic situtations, such as in cryptographic protocols over quantum networks. Here we implement such "semi-device independent'' techniques to experimentally witness all types of entanglement on a three-qubit photonic W state. Furthermore we analise the amount of genuine randomness that can be certified in this scenario from any bipartition of the three-qubit W state.
Original languageEnglish
Article number015011
Number of pages12
JournalQuantum Science and Technology
Volume2
Issue number1
Early online date3 Apr 2017
DOIs
Publication statusPublished - 2017

Structured keywords

  • QITG
  • Bristol Quantum Information Institute

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