Biography and current work
MissionDean of research, EPFL
BiographyBenoît Deveaud was born in France in 1952. In 1971, he enters Ecole Polytechnique in Paris where he specializes in physics. In 1974, he joins the National Center for research in Telecommunications (CNET).
He undertakes at the same time studies on the main impurity centers in III-V semiconductors, and continues his studies in physics by preparing a diploma in solid state physics in Rennes. In 1984, he defends his PhD thesis at the University of Grenoble, under the supervision of Gérard Martinez. Meanwhile, his team gets interested in semiconductor microstructures and launches studies on the structural and optical properties of superlattices based on gallium arsenide. These studies highlight for example vertical transport in superlattices as well as the quantification of excitonic energies in a quantum well.
In 1986 he joins the team of Daniel Chemla in Bell Laboratories (Holmdel, USA) and takes part in the development of the first luminescence set-up having a temporal resolution better than 1 picosecond. He studies then ultrafast processes in quantum wells.
Returning to France in 1988, at CNET, he coaches a laboratory of high-speed studies, interested in the optical and electronic properties of semiconductor materials.
Appointed professor in Physics at EPFL in October 1993, his research team studies the physics of ultrafast processes in semiconductor micro and nanostructures and in devices that use them. He has been the Director the Institute of Micro and Optoelectronics since 1998, then of the Institute of Quantum Photonic and Electronics from 2003 to 2008.
His team takes an active part in the "Quantum Photonics" National Center of Competence in Research, of which he was the Deputy Director from 2001 to 2005 then the Director since July 2005.
As of 2008, he is Dean for Research at EPFL and president of the research commission.
He has been a divisional editor of Physical Review Letters from 2001 to 2007.
Latest NewsVortices in Polariton condensates
We have evidenced vortices in polariton condensates through the change of phase by 2PI around the core. The vortices are stabilized by disorder and provide a strong indication that Bose Einstein condensate of polaritons are indeed superfluid.
see : http://www.nature.com/nphys/journal/v4/n9/full/nphys1051.html
Bringing quantum effects out of the cold
We have been able to achieve Bose-EInstein condensation in the solid state. Polaritons, i.e. half matter half light particles produced in a semiconductor microcavity, have shown all characteristics of condensation at a temperature of 19K.
See the press release at : http://actualites.epfl.ch/presseinfo-com?id=378
Probing carrier dynamics in nanostructures :
We have built a new machine capable of unprecedented time and spatial precision. This is a picosecond cathodoluminescence system that allows to follow the movements of electrons in nanostructures.
See the press release at : http://sb.epfl.ch/page59263-fr.html
Benoît DeveaudProfessor in Physics
Fax : +41 21 693 45 25
Fields of Expertise
- Ultrafast properties of quantum wells and semiconductor microstructures,
- Quantum interactions between light and matter