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Benoît Deveaud-Plédran Research Dean's Office Professor in Physics birth date: 19.09.1952 nationality: Française web site: http://ipeq.epfl.ch/ office(s): PHD3435 phone(s): [+41 21 69] 35496,33573,33355 fax: +41 21 693 45 25 MISSION Director, "Quantum Photonics" National Center for Competence in Research Dean of research, EPFL BIOGRAPHY Benoît Deveaud-Plédran 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 Gérerd 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. MAIN PUBLICATIONS Dynamics of trion formation in GaAs quantum wells, Portella-Oberli, M.T., Berney, J., Kappei, L., Morier-Genoud, F., Szczytko, J., Deveaud-Plédran, B.,, Phys. Rev. Lett., 102, 096402 (2009) Quantized vortices in an exciton-polariton condensate, K.G. Lagoudakis, M. Wouters, M. Richard, A. Baas, I. Carusotto, R. André, LS. Dang, B. Deveaud-Plédran,, Nature Physics, 4, p.706-710 (2008) Bose-Einstein condensation of exciton polaritons, J. Kasprzak, M. Richard, S. Kundermann, A. Baas, P. Jeambrun, J. M. J. Keeling, F. M. Marchetti, M. H. Szymanska, R. André, J. L. Staehli, V. Savona, P. B. Littlewood, B. Deveaud and Le Si Dang,, Nature,443, pp.409-414 (2006) Second order time correlations within a polariton Bose Einstein condensate in a CdTe microcavity, J. Kasprzak, M. Richard, A. Baas, B. Deveaud, R. André, J-Ph. Poizat, Le Si Dang, Phys. Rev. Lett., 100, 067402 (2008) Synchronized and desynchronized phases of exciton-polariton condensates in the presence of disorder, A. Baas, K.G. Lagoudakis, M. Richard, R. André. Le Si Dang, B. Deveaud-Plédran, Phys. Rev. Lett., 100, 170401 (2008) Polariton quantum boxes in semiconductor microcavities, O. El Daïf, A. Baas, J.-P. Brantut, R. Idrissi Kaitouni, J.L. Staehli, F. Morier-Genoud, B. Deveaud, T. Guillet, Appl. Phys. Lett., 88, 061105 (2006) High-temperature ultrafast polariton parametric amplification in semiconductor microcavities, M. Saba, C. Ciuti, J. Bloch, V. Thierry-Mieg, R. André, Le Si Dang,, S. Kundermann, A. Mura, G. Bongiovanni, J. L. Staehli, B. Deveaud, , Nature, 414, 2001 p. 731 (2001), 414, 2001 Theory of the angle-resonant polariton amplifier, Ciuti C, Schwendimann P, Deveaud B, A. Quattropani, Phys. Rev., B62, R4825 (2000) Coherent Control of Polariton Parametric Scattering in Semiconductor Microcavities , S. Kundermann, M. Saba, C. Ciuti, T. Guillet, U. Oesterle, J. L. Staehli, and B. Deveaud, Phys. Rev. Lett., 80 pp. 107402-107405 (2003), 88, 2003 Direct observation of the Mott transition in an optically excited semiconductor quantum well, L. Kappei, J. Szczytko, F. Morier-Genoud, B. Deveaud,, Phys. Rev. Lett., 94 147403 (2005) Probing carrier dynamics in nanostructures by picosecond cathodoluminescence, M. Merano, S. Sonderegger, A. Crottini, S. Collin, E. Pelucchi, A. Malko, M.H. Baier, E. Kapon, B. Deveaud, J-D. Ganière, Nature, 438, 479 (2005) Localization dependent biexciton spectrum in semiconductor quantum wires, A. Feltrin, V. Savona, F. Michelini, J.L. Staehli, and B. Deveaud J. Toquant, X.L. Wang, and M. Ogura, Phys. Rev. Lett., 95 177404 (2005) Direct measure of the exciton formation in quantum wells from time resolved interband luminescence, J. Szczytko, L. Kappei, J. Berney, F. Morier-Genoud, M.T. Portella-Oberli, B. Deveaud, Phys. Rev. Lett., 93 pp. 137401-137405 (2004) Crossover from exciton to biexciton polaritons in semiconductor microcavities , Saba M, Quochi F, Ciuti C, R.P. Stanley, R. Houdré, U. Oesterle, J.L. Staehli, B. Deveaud, G. Bongiovanni, A. Mura , Phys. Rev. Lett., 85, 385 (2000), 85, 2000 Optical signatures of energy level statistics in a disordered quantum system , V. Savona, S. Haacke, B. Deveaud, Phys. Rev. Lett., 84, 183 (2000) Strongly Driven Semiconductor Microcavities - From the Polariton Doublet to an AC Stark Triplet , Quochi-F Bongiovanni-G Mura-A Staehli-JL Deveaud-B Stanley-RP Oesterle-U Houdre-R, Phys. Rev Lett., 80, 4733 (1998)., 80, 1998 Resonant femtosecond emission from quantum well excitons : Rayleigh scattering and luminescence , S. Haacke, R.A. Taylor, R. Zimmermann, I. Bar-Joseph, B. Deveaud, Phys. Rev. Lett., 78, 2228-2231 (1997), 78, 1997 Capture of electron and holes in quantum wells, B. Deveaud, J. Shah, T.C: Damen, WT. Tsang, Appl. Phys. Lett. 52 1886 (1988) Enhanced radiative decay of free excitons in GaAs quantum wells , B. Deveaud, F. Clérot, N. Roy, K. Satzke, B. Sermage, D.S. Katzer, Phys. Rev. Lett., 67, 2355 (1991), 67, 1991 Bloch transport of electrons and holes in superlattice minibands: direct measurement by subpicosecond luminescence spectroscopy. , B. Deveaud, J. Shah, T.C. Damen, B. Lambert, A. Regreny, Phys. Rev. Lett., 58, p2582 (1987) , 58, 1987 Observation of carrier localisation in intentionally disordered superlattices , A. Chomette, B. Deveaud, A. Regreny, G. Bastard A. Chomette, B. Deveaud, A. Regreny, G. Bastard , Phys. Rev. Lett.,, 57, p1464, 1986

Skills Ultrafast properties of quantum wells and semiconductor microstructures, Quantum interactions between light and matter Teaching Physics Optical properties of nanostructures [en] Phd programs Photonics Physics (edoc) Phd Students Abbaspour Hadis Grosso Gabriele Manni Francesco Shahmohammadi Mehran Takemura Naotomo Past Phd students: Ambigapathy Rajesh Berney Jean Cerna Roland Ciulin Victoria Dorsaz Julien El Daïf Ounsi Guillaumée Mickaël Roger Hartig Michaël Hessler Thierry Idrissi Kaitouni Reda Kappei Lars Kohnle Verena Lagoudakis Konstantinos Markus Alexander Moreno Pablo Nardin Gaël Paraïso Taofiq Ridha Philipp Salleras Vila Ferran Latest News Vortices 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