Show simple item record

dc.contributor.authorSun, He-Bien_US
dc.contributor.authorWiseman, Howarden_US
dc.date.accessioned2017-05-03T11:43:17Z
dc.date.available2017-05-03T11:43:17Z
dc.date.issued2009en_US
dc.date.modified2010-06-09T07:34:52Z
dc.identifier.issn09538984en_US
dc.identifier.doi10.1088/0953-8984/21/12/125301en_AU
dc.identifier.urihttp://hdl.handle.net/10072/26024
dc.description.abstractWe propose a quantum trajectory analysis of a scheme to measure the states of a coupled-dot device (qubit) where there is a fluctuating energy gap ? between the two states. The system consists of the qubit and a readout dot coupled to source and drain leads. The tunnel rate through the detector is conditioned by the occupation number of the nearer quantum dot (target) of the qubit and therefore probes the states of the qubit. We derive a Lindblad-form master equation to calculate the unconditional evolution of the qubit and a conditional stochastic master equation calculating the conditional evolution for different tunneling rates. The results show the effects of various device parameters and provide the optimum selection and combination of the system structure.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent561485 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishingen_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom125301-1en_US
dc.relation.ispartofpageto125301-5en_US
dc.relation.ispartofjournalJournal of Physics: Condensed Matteren_US
dc.relation.ispartofvolume21en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchQuantum Information, Computation and Communicationen_US
dc.subject.fieldofresearchcode020603en_US
dc.titleA model for measurement of the states in a coupled-dot qubiten_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, School of Natural Sciencesen_US
gro.rights.copyrightCopyright 2009 Institute of Physics Publishing. 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.issued2009
gro.hasfulltextFull Text


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record