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dc.contributor.authorGriffith, E.en_US
dc.contributor.authorHill, C.en_US
dc.contributor.authorRalph, J.en_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.authorJacobs, Kurten_US
dc.date.accessioned2017-04-24T08:47:55Z
dc.date.available2017-04-24T08:47:55Z
dc.date.issued2007en_US
dc.date.modified2009-10-13T21:53:41Z
dc.identifier.issn10980121en_US
dc.identifier.doi10.1103/PhysRevB.75.014511en_AU
dc.identifier.urihttp://hdl.handle.net/10072/18283
dc.description.abstractWe propose techniques for implementing two different rapid state purification schemes, within the constraints present in a superconducting charge qubit system. Both schemes use a continuous measurement of charge (z) measurements, and seek to minimize the time required to purify the conditional state. Our methods are designed to make the purification process relatively insensitive to rotations about the x-axis, due to the Josephson tunnelling Hamiltonian. The first proposed method, based on the scheme of Jacobs [Phys. Rev. A 67, 030301(R) (2003)] uses the measurement results to control bias (z) pulses so as to rotate the Bloch vector onto the x-axis of the Bloch sphere. The second proposed method, based on the scheme of Wiseman and Ralph [New J. Phys. 8, 90 (2006)] uses a simple feedback protocol which tightly rotates the Bloch vector about an axis almost parallel with the measurement axis. We compare the performance of these and other techniques by a number of different measures.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent371422 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeRidge, NYen_US
dc.publisher.urihttp://prb.aps.org/en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom014511-1en_US
dc.relation.ispartofpageto014511-12en_US
dc.relation.ispartofjournalPhysical Review B: Condensed Matter and Materials Physicsen_US
dc.relation.ispartofvolume75en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode240210en_US
dc.titleRapid-state purification protocols for a Cooper pair boxen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2007 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's website for access to the definitive, published version.en_AU
gro.date.issued2007
gro.hasfulltextFull Text


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    Contains articles published by Griffith authors in scholarly journals.

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