Multipartite Einstein-Podolsky-Rosen steering and genuine tripartite entanglement with optical networks

dc.contributor.authorArmstrong, Seiji
dc.contributor.authorWang, Meng
dc.contributor.authorTeh, Run Yan
dc.contributor.authorGong, Qihuang
dc.contributor.authorHe, Qiongyi
dc.contributor.authorJanousek, Jiri
dc.contributor.authorBachor, Hans
dc.contributor.authorReid, Margaret D.
dc.contributor.authorLam, Ping Koy
dc.date.accessioned2015-06-22T03:48:21Z
dc.date.available2015-06-22T03:48:21Z
dc.date.issued2015-01-05
dc.date.updated2015-12-10T10:35:35Z
dc.description.abstractThe Einstein-Podolsky-Rosen (EPR) paradox established a link between entanglement and nonlocality in quantum mechanics. EPR steering is the nonlocality associated with the EPR paradox and has traditionally only been investigated between two parties. Here, we present the first experimental observations of multipartite EPR steering, and of the genuine tripartite continuous variable entanglement of three mesoscopic optical systems. We explore different linear optics networks - each one with optimised asymmetries - that create multipartite steerable states containing different numbers of quantised optical modes (qumodes). By introducing asymmetric loss on a 7-qumode state, we characterize 8 regimes of directional steering, showing that N + 1 regimes exist for an N-qumode state. Further, we reveal the directional monogamy of steering, and experimentally demonstrate continuous variable one-sided semi device-independent quantum secret sharing. Our methods establish principles for the development of multiparty quantum communication protocols with asymmetric observers, and can be extended to qubits, whether photonic, atomic, superconducting, or otherwise.
dc.description.sponsorshipThis research was conducted by the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology (project number CE110001029) and has been supported by the Australian Research Council DECRA and Discovery Project Grants schemes. S.A. is grateful for funding from the Australia–Asia Prime Minister‘s Award. R.Y.T. thanks Swinburne University for a Research SUPRA Award, and Q.H. thanks National Natural Science Foundation of China under Grant No. 11121091 and 11274025. This work was supported in part by National Science Foundation Grant No. PHYS-1066293 and the hospitality of the Aspen Center for Physics.en_AU
dc.identifier.issn1745-2473en_AU
dc.identifier.urihttp://hdl.handle.net/1885/14046
dc.publisherNature Publishing Group
dc.relationhttp://purl.org/au-research/grants/arc/CE110001029
dc.rights© 2015 Macmillan Publishers Limited.
dc.sourceNature Physics
dc.titleMultipartite Einstein-Podolsky-Rosen steering and genuine tripartite entanglement with optical networks
dc.typeJournal article
dcterms.dateAccepted2014-12-23
local.bibliographicCitation.issue2en_AU
local.bibliographicCitation.lastpage172en_AU
local.bibliographicCitation.startpage167en_AU
local.contributor.affiliationArmstrong, S., Centre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationJanousek, J., Centre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationBachor, H.-A., Centre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.affiliationLam, P. K., Centre for Quantum Computation and Communication Technology, Department of Quantum Science, The Australian National Universityen_AU
local.contributor.authoremailseiji.armstrong@gmail.comen_AU
local.contributor.authoruidu3950704en_AU
local.identifier.absfor020600 - QUANTUM PHYSICS
local.identifier.absfor020500 - OPTICAL PHYSICS
local.identifier.absfor020502 - Lasers and Quantum Electronics
local.identifier.ariespublicationa383154xPUB1334
local.identifier.citationvolume11en_AU
local.identifier.doi10.1038/nphys3202en_AU
local.identifier.scopusID2-s2.0-84926101300
local.identifier.uidSubmittedByu1005913en_AU
local.publisher.urlhttp://www.nature.com/en_AU
local.type.statusMetadata onlyen_AU

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