Optically Induced Hybridization of a Quantum Dot State with a Filled Continuum

P. A. Dalgarno, M. Ediger, B. D. Gerardot, J. M. Smith, S. Seidl, M. Kroner, K. Karrai, P. M. Petroff, A. O. Govorov, and R. J. Warburton
Phys. Rev. Lett. 100, 176801 – Published 28 April 2008

Abstract

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.

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  • Received 31 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.176801

©2008 American Physical Society

Authors & Affiliations

P. A. Dalgarno1, M. Ediger1, B. D. Gerardot1, J. M. Smith1, S. Seidl2, M. Kroner2, K. Karrai2, P. M. Petroff3, A. O. Govorov4, and R. J. Warburton1

  • 1School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
  • 2Center for NanoScience and Department für Physik, Ludwig-Maximilians-Universität, 80539 München, Germany
  • 3Materials Department, University of California, Santa Barbara, California 93106, USA
  • 4Department of Physics and Astronomy, Ohio University, Athens, Ohio, USA

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Issue

Vol. 100, Iss. 17 — 2 May 2008

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