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QDotsWe study the dynamic control of the occupancy state and the quantized energy levels of quantum dot and quantum post nanostructures.

Recently we set focus on the coherent nature of the driving surface acoustic wave (SAW) and tis interaction with our semiconductor artificial atoms. We transferred the paradigm of Fourier synthesis and realized a Hammond organ for our nano sound waves.

Goals include the realization of a precisely triggered single photon source and the implementation of acoustically controlled quantum logic operations.

Here's a short video animation on a SAW-pumped single photon source (SAW-SPS) using a self-assembled quantum post (QP)


  


Key publications:

Please see full publication list to find out more about our quantum dot research activities.


Team:

Collaborations:

  • Sample growth
    • Kai Müller, Gregor Koblmüller and Jonathan Finley, Walter Schottky Institut, TU München, Self-assembled Quantum Dots and QD-Molecules
    • Andreas Wieck (Bochum) and Dirk Reuter (Paderborn), Self-assembled Quantum Dots 
    • Pierre Petroff, UC Santa Barbara, Quantum Posts
    • Oliver Schmidt (Dresden) and Armando Rastelli (Linz), Strain-free Quantum Dots
  • Theory
    • Peter Hänggi (Augsburg) and Sigmund Kohler (Madrid), SAW-driven quantum gates
    • Gabriel Bester (Hamburg), SAW-control of electronic structure

This work is supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 642688 (SAWtrain) and the Cluster of Excellence Nanosystems Initiative Munich.