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dc.contributor.authorLanyon, Benjamin P
dc.contributor.authorBarbieri, Marco
dc.contributor.authorAlmeida, Marcelo P
dc.contributor.authorJennewein, Thomas
dc.contributor.authorRalph, Timothy C
dc.contributor.authorResch, Kevin J
dc.contributor.authorPryde, Geoff J
dc.contributor.authorO'Brien, Jeremy L
dc.contributor.authorGilchrist, Alexei
dc.contributor.authorWhite, Andrew G
dc.date.accessioned2017-05-03T15:07:57Z
dc.date.available2017-05-03T15:07:57Z
dc.date.issued2009
dc.date.modified2010-10-13T10:00:45Z
dc.identifier.issn1745-2473
dc.identifier.doi10.1038/NPHYS1150
dc.identifier.urihttp://hdl.handle.net/10072/30259
dc.description.abstractQuantum computation promises to solve fundamental, yet otherwise intractable, problems across a range of active fields of research. Recently, universal quantum logic-gate sets-the elemental building blocks for a quantum computer-have been demonstrated in several physical architectures. A serious obstacle to a full-scale implementation is the large number of these gates required to build even small quantum circuits. Here, we present and demonstrate a general technique that harnesses multi-level information carriers to significantly reduce this number, enabling the construction of key quantum circuits with existing technology. We present implementations of two key quantum circuits: the three-qubit Toffoli gate and the general two-qubit controlled-unitary gate. Although our experiment is carried out in a photonic architecture, the technique is independent of the particular physical encoding of quantum information, and has the potential for wider application.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent530504 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherNature Publishing Group
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom134
dc.relation.ispartofpageto140
dc.relation.ispartofissue2
dc.relation.ispartofjournalNature Physics
dc.relation.ispartofvolume5
dc.rights.retentionY
dc.subject.fieldofresearchMathematical sciences
dc.subject.fieldofresearchPhysical sciences
dc.subject.fieldofresearchcode49
dc.subject.fieldofresearchcode51
dc.titleSimplifying quantum logic using higher-dimensional Hilbert spaces
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2009 Nature Publishing Group. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
gro.date.issued2009
gro.hasfulltextFull Text
gro.griffith.authorPryde, Geoff


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