Optically induced hybridization of a quantum dot state with a filled continuum

We present an optical signature of a hybridization between a localized quantum dot state and a filled continuum. Radiative recombination of the negatively charged trion in a single quantum dot leaves behind a single electron. We show that in two regions of vertical electric field, the electron hybri...

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Bibliographic Details
Published inPhysical review letters Vol. 100; no. 17; p. 176801
Main Authors Dalgarno, P A, Ediger, M, Gerardot, B D, Smith, J M, Seidl, S, Kroner, M, Karrai, K, Petroff, P M, Govorov, A O, Warburton, R J
Format Journal Article
LanguageEnglish
Published United States 02.05.2008
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Summary:We present an optical signature of a hybridization between a localized quantum dot state and a filled continuum. Radiative recombination of the negatively charged trion in a single quantum dot leaves behind a single electron. We show that in two regions of vertical electric field, the electron hybridizes with a continuum through a tunneling interaction. The hybridization manifests itself through an unusual voltage dependence of the emission energy and a non-Lorentzian line shape, features which we reproduce with a theory based on the Anderson Hamiltonian.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.100.176801