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                Quantum dot & photonic nanostructures group homepage

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The quantum dot group is a research group in the department "Nanophotonics and ultrafast Electronics" of Institut d'Electronique Fondamentale. Our group studies semiconductor self-assembled quantum dots. Self-assembled quantum dots are semiconductor nanostructures with characteristic dimensions in the nanometer or tens of nanometers scale. Self-assembled quantum dots can be formed spontaneously by growing lattice mismatched materials like InAs on GaAs or Ge on Si. The physics and the potential applications of these nanostructures are incredibly rich. At the nanometer length scale, the motion of the carriers is governed by quantum mechanics and the energy levels are quantized just like atoms or molecules. From this point of view [of discrete energy levels], self-assembled quantum dots can be considered as artificial atoms inserted into a solid matrix. However this picture is limited. The coupling of the carriers with the environment like the vibration modes of the crystals, leads to very specific properties and interaction mechanisms.
Semiconductor quantum dots are potential candidates for several type of optoelectronic devices like long wavelength lasers or midinfrared photodetectors with improved performances as compared to bulk or two-dimensional heterostructures. They are also potential candidates for quantum information processing as single photon sources or support of qubits.

Our group studies different aspects related to semiconductor quantum dots in particular those related to InAs/GaAs quantum dots and Ge/Si self-assembled quantum dots :

Optical spectroscopy of nanostructures

Modeling of the electronic structure of  nanostructures

Single quantum dot absorption nanospectroscopy

Photonic devices : semiconductor quantum dots and photonic crystals

Quantum information processing with quantum dots

Our group also develops optical telecommunication experiments related to the saturable absorption properties of semiconductors :

Saturable absorption of low-dimensional semiconductors

To learn more about our studies, visit the research web page or click on the links above.

The quantum dot group is part of the SANDiE european network of excellence, that brings together 32 european leading groups in the field of self-assembled semiconductor nanostructures.

Our group co-organizes JBQ 2013, a recurrent national event on quantum dots 24-25 june 2013 : jbq2013.upmc.fr

Past events:
We contribute to the organization of the international conference OECS12 12-16th septembre 2011 : www.oecs12.org
Our group co-organizes JNMO 2010, a recurrent national event 28 setp.-1st oct. 2010 : www.jnmo2010.org
SANDiE 1st Intersublevel Workshop 2-3 April 2008 Paris : http://pages.ief.u-psud.fr/QDgroup/islworkshop/
SANDiE 2nd SanCharMod Workshop 12-13 December 2007 Paris : http://pages.ief.u-psud.fr/QDgroup/SanCharMod/

Our group teaches in master "Components and Antenna for Telecommunications": master2cat.ief.u-psud.fr at university Paris-Sud and contributes in "Quantum Mecanics" basic courses at ENSTA and Supélec.

Electron Wave Function
Photonic crystal

Single QDs
Spin States
Semiconductor Saturable absorber in an optical cavity
NAEL department

QD Group advisor: Dr Sebastien Sauvage - Phone : 33 1 69 15 40 02
e-mail : sebastien.sauvage (at) ief.u-psud.fr

Fax : 33 1 69 15 40 90


Up-level : NAEL Departement advisor: Dr Philippe Boucaud (english, french)
Phone : 33 1 69 15 40 92
e-mail : philippe.boucaud (at) ief.u-psud.fr

Up-up-level : Institut d'Electronique Fondamentale
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