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dc.contributor.author
Gustavsson, Simon
dc.contributor.author
Rudner, Mark S.
dc.contributor.author
Levitov, Leonid S.
dc.contributor.author
Leturcq, Renaud
dc.contributor.author
Studer, Matthias
dc.contributor.author
Ihn, Thomas
dc.contributor.author
Ensslin, Klaus
dc.date.accessioned
2017-06-11T14:43:08Z
dc.date.available
2017-06-11T14:43:08Z
dc.date.issued
2014
dc.identifier.uri
http://hdl.handle.net/20.500.11850/94570
dc.description.abstract
Semiconductor quantum dots driven by the broadband radiation fields of nearby quantum point contacts provide an exciting new setting for probing dynamics in driven quantum systems at the nanoscale. We report on real-time charge-sensing measurements of the dot occupation, which reveal sharp resonances in the ionization rate as a function of gate voltage and applied magnetic field. Despite the broadband nature of excitation, the resonance widths are much smaller than the scale of thermal broadening. We show that such resonant enhancement of ionization is not accounted for by conventional approaches relying on elastic scattering processes, but can be explained via a mechanism based on a bottleneck process that is relieved near excited state level crossings. The experiment thus reveals a new regime of a strongly driven quantum dynamics in few-electron systems. The theoretical results are in good agreement with observations.
dc.language.iso
en
dc.publisher
Cornell University
dc.title
Ultra-narrow ionization resonances in a quantum dot under broadband excitation
dc.type
Working Paper
ethz.journal.title
arXiv
ethz.journal.volume
arXiv:1403.3340
ethz.size
8 p.
ethz.notes
Submitted 13 March 2014. See also: http://e-citations.ethbib.ethz.ch/view/pub:129022.
ethz.publication.place
Ithaca, NY
ethz.publication.status
published
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02505 - Laboratorium für Festkörperphysik / Laboratory for Solid State Physics::03439 - Ensslin, Klaus / Ensslin, Klaus
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02505 - Laboratorium für Festkörperphysik / Laboratory for Solid State Physics::03439 - Ensslin, Klaus / Ensslin, Klaus
ethz.identifier.url
http://arxiv.org/abs/1403.3340v1
ethz.date.deposited
2017-06-11T14:43:50Z
ethz.source
ECIT
ethz.identifier.importid
imp593652ae2275c28406
ethz.ecitpid
pub:148512
ethz.eth
yes
ethz.availability
Metadata only
ethz.rosetta.installDate
2017-07-13T00:28:27Z
ethz.rosetta.lastUpdated
2018-11-02T17:20:15Z
ethz.rosetta.versionExported
true
ethz.COinS
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