Cooper Pair Splitting by Means of Graphene Quantum Dots

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorTan, Z. B.
dc.contributor.authorCox, D.
dc.contributor.authorNieminen, T.
dc.contributor.authorLähteenmäki, P.
dc.contributor.authorGolubev, D.
dc.contributor.authorLesovik, G. B.
dc.contributor.authorHakonen, Pertti J.
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-10-19T09:01:37Z
dc.date.available2015-10-19T09:01:37Z
dc.date.issued2015
dc.description.abstractA split Cooper pair is a natural source for entangled electrons which is a basic ingredient for quantum information in the solid state. We report an experiment on a superconductor-graphene double quantum dot (QD) system, in which we observe Cooper pair splitting (CPS) up to a CPS efficiency of ∼10%. With bias on both QDs, we are able to detect a positive conductance correlation across the two distinctly decoupled QDs. Furthermore, with bias only on one QD, CPS and elastic cotunneling can be distinguished by tuning the energy levels of the QDs to be asymmetric or symmetric with respect to the Fermi level in the superconductor.en
dc.description.versionPeer revieweden
dc.format.extent096602/1-5
dc.format.mimetypeapplication/pdfen
dc.identifier.citationTan, Z. B. & Cox, D. & Nieminen, T. & Lähteenmäki, P. & Golubev, D. & Lesovik, G. B. & Hakonen, Pertti J. 2015. Cooper Pair Splitting by Means of Graphene Quantum Dots. Physical Review Letters. Volume 114, Issue 9. 096602/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.114.096602en
dc.identifier.doi10.1103/physrevlett.114.096602
dc.identifier.issn0031-9007 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/18179
dc.identifier.urnURN:NBN:fi:aalto-201510194767
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Lettersen
dc.relation.ispartofseriesVolume 114, Issue 9
dc.rights© 2015 American Physical Society (APS). This is the accepted version of the following article: Tan, Z. B. & Cox, D. & Nieminen, T. & Lähteenmäki, P. & Golubev, D. & Lesovik, G. B. & Hakonen, Pertti J. 2015. Cooper Pair Splitting by Means of Graphene Quantum Dots. Physical Review Letters. Volume 114, Issue 9. 096602/1-5. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.114.096602, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.096602.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordCooper pair splittingen
dc.subject.keywordgrapheneen
dc.subject.keywordquantum dotsen
dc.subject.otherPhysicsen
dc.titleCooper Pair Splitting by Means of Graphene Quantum Dotsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen

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