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DFG Forschergruppe FOR 730

Positioning of single nanostructures - Single quantum devices

forschergruppe

 

         International Workshop 2011

         International Workshop 2009

         International Workshop 2007

         International Workshop 2006

 

 

 

 

 

 

 


Project leaders 

Harald Giessen, Prof. Dr.

Universität Stuttgart, 4. Physikalisches Institut
Fedor Jelezko, Dr. Universität Stuttgart, 3. Physikalisches Institut
Michael Jetter, Dr. Universität Stuttgart, Institut für Halbleiteroptik und Funktionelle Grenzflächen
Klaus Kern, Prof. Dr. Max-Planck Institut für Festkörperforschung, Stuttgart, Nanoscale Science Department
Klaus Kuhnke, Dr. Max-Planck Institut für Festkörperforschung, Stuttgart, Nanoscale Science Department
Markus Lippitz, Prof. Dr. Universität Stuttgart, 4. Physikalisches Institut, und Max-Planck Institut für Festkörperforschung, Stuttgart
Peter Michler, Prof. Dr. Universität Stuttgart, Institut für Halbleiteroptik und Funktionelle Grenzflächen (Sprecher)
Jens Pflaum, Prof. Dr. Universität Würzburg, Experimentelle Physik VI
Armando Rastelli, Dr. IFW Dresden, Institut für Integrative Nanowissenschaften
Oliver Schmidt, Prof. Dr. IFW Dresden, Institut für Integrative Nanowissenschaften
Jörg Schulze, Prof. Dr. designierter Nachfolger von Herrn Prof. Kasper, Universität Stuttgart, Institut für Halbleitertechnik
Heinz Schweizer, Prof. Dr. Universität Stuttgart, 4. Physikalisches Institut
Ralf Vogelgesang, Dr. Max-Planck Institut für Festkörperforschung, Stuttgart, Nanoscale Science Department
Jörg Wrachtrup, Prof. Dr. Universität Stuttgart, 3. Physikalisches Institut

 


Correspondence address:

Prof. Dr. Peter Michler

Universität Stuttgart
Institut für Halbleiteroptik
und Funktionelle Grenzflächen
Allmandring 3
70569 Stuttgart

phone: 0711-685 64660
fax: 0711-685 63866
e-mail: mailto icon p.michler

 


Goals

The unique success story of semiconductor physics and technology relies on the ability to highly integrate micro- and nanometer sized functional units on a single chip. Within the last few years single nanostructures, e.g., individual and coupled pairs of QDs, single molecules, and individual doping atoms moved more and more into the focus of many research groups to study the exciting physics and to exploit their tremendous potential for device applications. For example, single-electron and single-photon devices have been realized using quantum dots, molecules and doping atoms as active elements. In most of the previous work, the position of the nanostructure was random due to the self-organized growth process or unselective deposition methods, e.g., spin coating on unstructured substrates. In fact, the full advantage of their superior properties can be utilized if a controlled positioning or growth of the nanostructure inside a more complex device structure can be realized, thereby defining precise coupling between the microscopic nanostructure and the macroscopic periphery. It will be our prime task to investigate and develop methods which allow the controlled positioning of single nanostructures in basic electronic and optoelectronic nano-devices such as single photon sources, coupled quantum-dot gates and tunnelling diodes. At the same time this will allow us to study important quantum mechanical effects like, the Purcell effect, superradiance effect, Rabi oscillations, coupling of electronic levels, the tunnel effect under much more controlled conditions which will lead to a deeper physical understanding.

 


Project overview

  1. Topic (P1): "Single molecule electroluminescence and spin-detection at the nanometre scale"
    J. Wachtrup, F. Jelezko, J. Pflaum, K. Kuhnke, and K. Kern
  2. Topic (P2): "Positioning of individual quantum dots inside microcavities - Coupling of individual quantum dots"
    P. Michler and O.G. Schmidt
  3. Topic (P4): "Plasmonic coupling of individual quantum dots"
    H. Giessen, R. Vogelgesang, and K. Kern
  4. Topic (P5): "Lateral quantum dot molecule - Towards an electric field controlled quantum gate"
    A. Rastelli, O. G. Schmidt, and P. Michler
  5. Topic (P6): "Vertical asymmetric double quantum dots (ADQD) - Towards a light controlled quantum gate"
    H. Schweizer and M. Jetter
  6. Topic (P7): "Ge/Si quantum dots in the sub 20 nm regime - Exact positioning and electrical functionalisation"
    J. Schulze, H. Giessen, O. G. Schmidt, and R. Vogelgesang
  7. Topic (P9): "Ultrafast spectroscopy of coupled quantum dots: Quantum dot-particle plasmon and quantum dot-quantum dot coupling"
    M. Lippitz and A. Rastelli