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Self-healing of quantum entanglement after an obstruction

dc.contributor.authorMcLaren, Melanieen_ZA
dc.contributor.authorMhlanga, Thandekaen_ZA
dc.contributor.authorPadgett, Miles J.en_ZA
dc.contributor.authorRoux, Filippus S.en_ZA
dc.contributor.authorForbes, Andrewen_ZA
dc.date.accessioned2016-11-23T14:13:26Z
dc.date.available2016-11-23T14:13:26Z
dc.date.issued2014
dc.identifier.citationMcLaren, M., et al. 2014. Self-healing of quantum entanglement after an obstruction. Nature Communications, 5, Article number: 3248, doi:10.1038/ncomms4248
dc.identifier.issn2041-1723 (online)
dc.identifier.otherdoi:10.1038/ncomms4248
dc.identifier.urihttp://hdl.handle.net/10019.1/99891
dc.descriptionCITATION: McLaren, M., et al. 2014. Self-healing of quantum entanglement after an obstruction. Nature Communications, 5, Article number: 3248, doi:10.1038/ncomms4248.
dc.descriptionThe original publication is available at http://www.nature.com/ncomms
dc.description.abstractQuantum entanglement between photon pairs is fragile and can easily be masked by losses in transmission path and noise in the detection system. When observing the quantum entanglement between the spatial states of photon pairs produced by parametric down-conversion, the presence of an obstruction introduces losses that can mask the correlations associated with the entanglement. Here we show that we can overcome these losses by measuring in the Bessel basis, thus once again revealing the entanglement after propagation beyond the obstruction. We confirm that, for the entanglement of orbital angular momentum, measurement in the Bessel basis is more robust to these losses than measuring in the usually employed Laguerre–Gaussian basis. Our results show that appropriate choice of measurement basis can overcome some limitations of the transmission path, perhaps offering advantages in free-space quantum communication or quantum processing systems.en_ZA
dc.description.urihttp://www.nature.com/articles/ncomms4248
dc.format.extent8 pages
dc.language.isoen_ZAen_ZA
dc.publisherNature Publishing Group
dc.subjectQuantum entanglementen_ZA
dc.subjectSelf-healing materialen_ZA
dc.subjectBessel functionsen_ZA
dc.subjectPhoton-photon interactionsen_ZA
dc.titleSelf-healing of quantum entanglement after an obstructionen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderMacmillan Publishers


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