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dc.contributor.authorP. Rohde, Peteren_US
dc.contributor.authorPryde, G.en_US
dc.contributor.authorO'Brien, J.en_US
dc.contributor.authorC. Ralph, Timothyen_US
dc.date.accessioned2017-05-03T15:07:53Z
dc.date.available2017-05-03T15:07:53Z
dc.date.issued2005en_US
dc.identifier.issn10502947en_US
dc.identifier.doi10.1103/PhysRevA.72.032306en_US
dc.identifier.urihttp://hdl.handle.net/10072/20989
dc.description.abstractWe describe an approach for characterizing the process performed by a quantum gate using quantum process tomography, by first modeling the gate in an extended Hilbert space, which includes nonqubit degrees of freedom. To prevent unphysical processes from being predicted, present quantum process tomography procedures incorporate mathematical constraints, which make no assumptions as to the actual physical nature of the system being described. By contrast, the procedure presented here assumes a particular class of physical processes, and enforces physicality by fitting the data to this model. This allows quantum process tomography to be performed using a smaller experimental data set, and produces parameters with a direct physical interpretation. The approach is demonstrated by example of mode matching in an all-optical controlled-NOT gate. The techniques described are general and could be applied to other optical circuits or quantum computing architectures.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent103716 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeRidge, NYen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom032306-1en_US
dc.relation.ispartofpageto032306-5en_US
dc.relation.ispartofissue3en_US
dc.relation.ispartofjournalPhysical Review A (Atomic, Molecular and Optical Physics)en_US
dc.relation.ispartofvolume72en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchcode240402en_US
dc.subject.fieldofresearchcode249999en_US
dc.titleQuantum-gate characterization in an extended Hilbert spaceen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2005 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal link for access to the definitive, published version.en_US
gro.date.issued2015-05-13T03:20:37Z
gro.hasfulltextFull Text


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