Resonance-hybrid states in a triple quantum dot

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.85.081301
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TypeArticle
Journal titlePhysical Review B
Volume85
Issue8
Pages081301-1081301-6
AbstractDelocalization by resonance between contributing structures explains the enhanced stability of resonancehybrid molecules. Here we report the realization of resonance-hybrid states in a few-electron triple quantum dot (TQD) obseved by excitation spectroscopy. The stabilization of the resonance-hybrid state and the bond between contributing states are achieved through access to the intermediate states with double occupancy of the dots. This explains why the energy of the hybridized singlet state is significantly lower than that of the triplet state. The properties of the three-electron doublet states can also be understood with the resonance-hybrid picture and geometrical phase. As well as for fundamental TQD physics, our results are useful for the investigation of materials such as quantum dot arrays, quantum information processors, and chemical reaction and quantum simulators.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19542543
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Record identifierd7239c89-643c-4b78-852d-4fb61d8624c0
Record created2012-02-24
Record modified2016-05-09
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