Journal of Low Temperature Physics

, Volume 153, Issue 5–6, pp 339–349 | Cite as

Subnanosecond Single Electron Source in the Time-Domain

  • A. Mahé
  • F. D. Parmentier
  • G. Fève
  • J.-M. Berroir
  • T. Kontos
  • A. Cavanna
  • B. Etienne
  • Y. Jin
  • D. C. Glattli
  • B. Plaçais
Article

Abstract

We describe here the realization of a single electron source similar to single photon sources in optics. On-demand single electron injection is obtained using a quantum dot connected to the conductor via a tunnel barrier of variable transmission (quantum point contact). Electron emission is triggered by a sudden change of the dot potential which brings a single energy level above the Fermi energy in the conductor. A single charge is emitted on an average time ranging from 100 ps to 10 ns ultimately determined by the barrier transparency and the dot charging energy. The average single electron emission process is recorded with a 0.5 ns time resolution using a real-time fast acquisition card. Single electron signals are compared to simulation based on scattering theory approach adapted for finite excitation energies.

Keywords

Quantum dot Single electron source Subnanosecond quantum dynamics Two dimensional electron gas Quantum hall effect 

PACS

73.21.La 73.23.-b 73.43.-f 85.35.Gv 

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • A. Mahé
    • 1
  • F. D. Parmentier
    • 1
  • G. Fève
    • 1
  • J.-M. Berroir
    • 1
  • T. Kontos
    • 1
  • A. Cavanna
    • 3
  • B. Etienne
    • 3
  • Y. Jin
    • 3
  • D. C. Glattli
    • 1
    • 2
  • B. Plaçais
    • 1
  1. 1.Laboratoire Pierre Aigrain, Département de PhysiqueEcole Normale SupérieureParis Cedex 05France
  2. 2.Service de Physique de l’Etat CondenséCEA SaclayGif-sur-YvetteFrance
  3. 3.Laboratoire de Photonique et NanostructuresUPR20 CNRSMarcoussis CedexFrance

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