Quantum-dot excitons in nanostructured environments

Jørn Märcher Hvam (Invited author), Søren Stobbe (Invited author), Peter Lodahl (Invited author)

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.
    Original languageEnglish
    Title of host publicationproceedings of the EXCON
    Publication date2010
    Publication statusPublished - 2010
    EventInternational Conference on Excitonic and Photonic Processes in Condensed and Nano Materials - Brisbane, Queensland, Australia
    Duration: 1 Jan 2010 → …
    Conference number: 9


    ConferenceInternational Conference on Excitonic and Photonic Processes in Condensed and Nano Materials
    CityBrisbane, Queensland, Australia
    Period01/01/2010 → …


    • spin-flip
    • quantum-dot excitons
    • photonic crystals
    • oscillator strength


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