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dc.contributor.authorG. White, Andrewen_US
dc.contributor.authorGilchrist, Alexeien_US
dc.contributor.authorPryde, Geoffen_US
dc.contributor.authorL. O'Brien, Jeremyen_US
dc.contributor.authorJ. Bremner, Michaelen_US
dc.contributor.authorK. Langford, Nathanen_US
dc.date.accessioned2017-04-24T12:34:53Z
dc.date.available2017-04-24T12:34:53Z
dc.date.issued2007en_US
dc.date.modified2014-05-15T22:15:24Z
dc.identifier.issn07403224en_US
dc.identifier.doi10.1364/JOSAB.24.000172en_US
dc.identifier.urihttp://hdl.handle.net/10072/15622
dc.description.abstractAccurate characterization of two-qubit gates will be critical for any realization of quantum computation. We discuss a range of measurements for characterizing two-qubit gates. These measures are architectureindependent and span a range of complexity from simple measurement routines to full quantum-state and process tomography. Simple indicative measures, which flag but do not quantify gate operation in the quantum regime, include the fringe visibility, parity, Bell-state fidelity, and entanglement witnesses. Quantitative measures of gate output states include linear entropy and tangle; measures of, and error bounds to, whole-gate operation are provided by metrics such as process fidelity, process distance, and average gate fidelity. We discuss which measures are appropriate, given the stage of development of the gate, and highlight connections between them.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent279098 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherOptical Society of Americaen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom172en_US
dc.relation.ispartofpageto183en_US
dc.relation.ispartofissue2en_US
dc.relation.ispartofjournalJournal of the Optical Society of America B: Optical Physicsen_US
dc.relation.ispartofvolume24en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchcode240402en_US
dc.subject.fieldofresearchcode249999en_US
dc.titleMeasuring two-qubit gatesen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightThis paper was published in Journal of the Optical Society of America B: Optical Physics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/JOSAB.24.000172. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.en_US
gro.date.issued2007
gro.hasfulltextFull Text


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