Coherent manipulation of three-spin states in a GaAs/AlGaAs triple dot device

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DOIResolve DOI: http://doi.org/10.1002/pssc.201200655
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TypeArticle
Journal titlePhysica Status Solidi (C) Current Topics in Solid State Physics
ISSN1862-6351
Volume10
Issue5
Pages752755; # of pages: 4
SubjectCharge configuration; Coherent manipulation; Electron spin state; GaAs/AlGaAs; Initialization points; Stability diagram; Three-spin states; Triple quantum; Magnetic moments; Semiconductor quantum dots; Spin dynamics
AbstractIn this paper we describe our recent experiments on coherent manipulation of electron spin states formed in a highly tunable GaAs/AlGaAs triple quantum dot device. The coherent evolution of spin states is achieved by using fast pulses from an initialization point in the (201) charge configuration region of the stability diagram. We demonstrate the versatility of the triple dot system capable of tuning to different regimes controlled by the width of the (111) region and pulse parameters. In particular we observe Δ'1/2-Q3/2 (analogue of S-T+ in a double dot) and Δ'1/2-Δ1/2 exchange driven oscillations from both sides of the stability diagram involving all three spins. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; Measurement Science and Standards; National Research Council Canada; Information and Communication Technologies
Peer reviewedYes
NPARC number21270622
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Record identifierbf826c43-1703-4d14-93ed-84c47bb77abc
Record created2014-02-17
Record modified2016-05-09
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