Optical Control of Excitons in a Pair of Quantum Dots Coupled by the Dipole-Dipole Interaction

Thomas Unold, Kerstin Mueller, Christoph Lienau, Thomas Elsaesser, and Andreas D. Wieck
Phys. Rev. Lett. 94, 137404 – Published 8 April 2005

Abstract

We demonstrate coherent nonlinear-optical control of excitons in a pair of quantum dots (QDs) coupled via dipolar interaction. The single-exciton population in the first QD is controlled by resonant picosecond excitation, giving rise to Rabi oscillations. As a result, the exciton transition in the second QD is spectrally shifted and concomitant Rabi oscillations are observed. We identify coupling between permanent excitonic dipole moments as the dominant interaction mechanism, whereas quasiresonant (Förster) energy transfer is weak. Such control schemes based on dipolar interaction are a prerequisite for realizing scalable quantum logic gates.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 5 October 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.137404

©2005 American Physical Society

Authors & Affiliations

Thomas Unold1, Kerstin Mueller1, Christoph Lienau1,*, Thomas Elsaesser1, and Andreas D. Wieck2

  • 1Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, D-12489 Berlin, Germany
  • 2Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität, 44870 Bochum, Germany

  • *Electronic address: lienau@mbi-berlin.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 94, Iss. 13 — 8 April 2005

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×