Control of Vertically Coupled InGaAs/GaAs Quantum Dots with Electric Fields

G. Ortner, M. Bayer, Y. Lyanda-Geller, T. L. Reinecke, A. Kress, J. P. Reithmaier, and A. Forchel
Phys. Rev. Lett. 94, 157401 – Published 19 April 2005

Abstract

Controllable interactions that couple quantum dots are a key requirement in the search for scalable solid state implementations for quantum information technology. From optical studies of excitons and corresponding calculations, we demonstrate that an electric field on vertically coupled pairs of In0.6Ga0.4As/GaAs quantum dots controls the mixing of the exciton states on the two dots and also provides controllable coupling between carriers in the dots.

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  • Received 29 October 2003

DOI:https://doi.org/10.1103/PhysRevLett.94.157401

©2005 American Physical Society

Authors & Affiliations

G. Ortner1,3, M. Bayer1,3, Y. Lyanda-Geller2, T. L. Reinecke2, A. Kress3, J. P. Reithmaier3, and A. Forchel3

  • 1Experimentelle Physik II, Universität Dortmund, D-44221 Dortmund, Germany
  • 2Naval Research Laboratory, Washington D.C., 20375, USA
  • 3Technische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany

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Issue

Vol. 94, Iss. 15 — 22 April 2005

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