IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v2y2011i1d10.1038_ncomms1241.html
   My bibliography  Save this article

Coherent electron–phonon coupling in tailored quantum systems

Author

Listed:
  • P. Roulleau

    (Solid State Physics Laboratory, ETH Zurich)

  • S. Baer

    (Solid State Physics Laboratory, ETH Zurich)

  • T. Choi

    (Solid State Physics Laboratory, ETH Zurich)

  • F. Molitor

    (Solid State Physics Laboratory, ETH Zurich)

  • J. Güttinger

    (Solid State Physics Laboratory, ETH Zurich)

  • T. Müller

    (Solid State Physics Laboratory, ETH Zurich)

  • S. Dröscher

    (Solid State Physics Laboratory, ETH Zurich)

  • K. Ensslin

    (Solid State Physics Laboratory, ETH Zurich)

  • T. Ihn

    (Solid State Physics Laboratory, ETH Zurich)

Abstract

The coupling between a two-level system and its environment leads to decoherence. Within the context of coherent manipulation of electronic or quasiparticle states in nanostructures, it is crucial to understand the sources of decoherence. Here we study the effect of electron–phonon coupling in a graphene and an InAs nanowire double quantum dot (DQD). Our measurements reveal oscillations of the DQD current periodic in energy detuning between the two levels. These periodic peaks are more pronounced in the nanowire than in graphene, and disappear when the temperature is increased. We attribute the oscillations to an interference effect between two alternative inelastic decay paths involving acoustic phonons present in these materials. This interpretation predicts the oscillations to wash out when temperature is increased, as observed experimentally.

Suggested Citation

  • P. Roulleau & S. Baer & T. Choi & F. Molitor & J. Güttinger & T. Müller & S. Dröscher & K. Ensslin & T. Ihn, 2011. "Coherent electron–phonon coupling in tailored quantum systems," Nature Communications, Nature, vol. 2(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1241
    DOI: 10.1038/ncomms1241
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms1241
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms1241?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1241. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.