dc.contributor.author Rossi, Alessandro en dc.contributor.author Zhao, R en dc.contributor.author Dzurak, AS en dc.contributor.author Gonzalez-Zalba, MF en dc.date.accessioned 2017-08-21T09:47:43Z dc.date.available 2017-08-21T09:47:43Z dc.date.issued 2017-05-23 en dc.identifier.issn 0003-6951 dc.identifier.uri https://www.repository.cam.ac.uk/handle/1810/266659 dc.description.abstract Sensitive charge detection has enabled qubit readout in solid-state systems. Recently, an alternative to the well-established charge detection via on-chip electrometers has emerged, based on $\textit{in situ}$ gate detectors and radio-frequency dispersive readout techniques. This approach promises to facilitate scalability by removing the need for additional device components devoted to sensing. Here, we perform gate-based dispersive readout of an accumulation-mode silicon quantum dot. We observe that the response of an accumulation-mode gate detector is significantly affected by its bias voltage, particularly if this exceeds the threshold for electron accumulation. We discuss and explain these results in light of the competing capacitive contributions to the dispersive response. dc.description.sponsorship This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 688539 and under the Marie Skłodowska-Curie Grant Agreement No. 654712 (SINHOPSI). This work was also financially supported by the Australian National Fabrication Facility for device fabrication. A.S.D. acknowledges support from the Australian Research Council (DP160104923 and CE11E0001017), the U.S. Army Research Office (W911NF-13-1-0024), and the Commonwealth Bank of Australia. dc.language.iso en en dc.publisher AIP Publishing dc.title Dispersive readout of a silicon quantum dot with an accumulation-mode gate sensor en dc.type Article prism.issueIdentifier 21 en prism.number 212101 en prism.publicationDate 2017 en prism.publicationName Applied Physics Letters en prism.volume 110 en dc.identifier.doi 10.17863/CAM.12743 dcterms.dateAccepted 2017-05-23 en rioxxterms.versionofrecord 10.1063/1.4984224 en rioxxterms.version VoR en rioxxterms.licenseref.uri http://www.rioxx.net/licenses/all-rights-reserved en rioxxterms.licenseref.startdate 2017-05-23 en dc.contributor.orcid Rossi, Alessandro [0000-0001-7935-7560] dc.identifier.eissn 1077-3118 rioxxterms.type Journal Article/Review en pubs.funder-project-id European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (654712) cam.issuedOnline 2017-05-23 en rioxxterms.freetoread.startdate 2018-05-23
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