Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jun 10, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Enhanced sequential carrier capture into individual quantum dots and quantum posts controlled by surface acoustic

Stefan Völk1, Florian J R Schülein, Florian Knall

  • 1Lehrstuhl für Experimentalphysik 1, Universität Augsburg, Universitätsstrasse 1, 86159 Augsburg, Germany.

Nano Letters
|August 21, 2010
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Magnetically programmable surface acoustic wave filters: device concept and predictive modeling.

Npj spintronics·2026
Same author

The 2026 guided acoustic waves roadmap.

Journal of physics D: Applied physics·2026
Same author

Enhancement of Indistinguishable-Photon Emission from a GaAs Quantum Dot via Charge-Noise Suppression.

Physical review letters·2026
Same author

Computational design of a ferroelectric framework material based on dipolar rotors.

The Journal of chemical physics·2026
Same author

Programmable nonlinear quantum photonic circuits.

Nature communications·2025
Same author

Eigenstate control of plasmon wavepackets with electron-channel blockade.

Nature communications·2025

Surface acoustic waves switch exciton occupancy in quantum nanostructures. Quantum posts show efficient switching, while quantum dots exhibit hysteresis due to carrier trapping in wetting layers.

Area of Science:

  • * Condensed matter physics
  • * Nanophotonics
  • * Materials science

Background:

  • * Self-assembled quantum dots (QDs) and quantum posts are crucial nanostructures for optoelectronic applications.
  • * Understanding carrier dynamics under external stimuli is key to device optimization.
  • * Surface acoustic waves (SAWs) offer a tunable method to manipulate charge carriers in nanomaterials.

Purpose of the Study:

  • * To investigate the effect of surface acoustic waves (SAWs) on the exciton occupancy of individual quantum dots and quantum posts.
  • * To explore the mechanisms behind acoustically induced switching of charged and neutral excitons.
  • * To compare the SAW response of quantum dots and quantum posts, identifying advantages for specific applications.

Main Methods:

  • * Optical spectroscopy experiments were conducted on individual self-assembled quantum dots and quantum posts.

More Related Videos

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Related Experiment Videos

Last Updated: Jun 10, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

  • * The influence of varying surface acoustic wave amplitudes on nanostructure emission was analyzed.
  • * Exciton emission intensity and occupancy switching were monitored as a function of SAW amplitude and sweep direction.

    • Main Results:

    • * SAWs induce switching of exciton occupancy and increase overall emission intensity in both quantum dots and quantum posts.
    • * Quantum posts exhibit continuous switching from charged to neutral excitons, independent of SAW amplitude sweep direction.
    • * Quantum dots display non-monotonic switching with hysteresis, and emission of charged excitons at high SAW amplitudes, attributed to carrier trapping in the wetting layer.

    Conclusions:

    • * Carrier trapping and localization in the wetting layer limit SAW-induced switching in quantum dots.
    • * Quantum posts demonstrate efficient acoustically induced charge transport, overcoming limitations seen in quantum dots.
    • * SAWs provide a viable method for dynamic control of exciton states in quantum nanostructures, with quantum posts showing superior performance.