Fields of expertise
Ultrafast properties of quantum wells and semiconductor microstructures,
Quantum interactions between light and matter
Quantum interactions between light and matter
BiographyBenoit Deveaud is now Research Director at Ecole Polytechnique in Palaiseau (France)
Benoît 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 from July 2005 till the end of the NCCR in 2013
From 2008 till 2014 he has been Dean for Research at EPFL and president of the research commission.
Starting in 2014, he has been head of Physics, till his departure from EPFL in 2017.
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
Deveaud publications --- 2011
Impact of alloy disorder on Auger recombination in single InGaN/GaN core-shell microrodsPhysical Review B. 2019-12-04. DOI : 10.1103/PhysRevB.100.235301.
Spatially dependent carrier dynamics in single InGaN/GaN core-shell microrod by time-resolved cathodoluminescenceApplied Physics Letters. 2018. DOI : 10.1063/1.5009728.
Enhancement of Auger recombination induced by carrier localization in InGaN/GaN quantum wellsPhysical Review B. 2017. DOI : 10.1103/PhysRevB.95.125314.
Asymmetric Cathodoluminescence Emission in CH3NH3PbI3-xBrx Perovskite Single CrystalsACS PHOTONICS. 2016. DOI : 10.1021/acsphotonics.6b00290.
Exciton-polariton Bose-Einstein condensation: advances and issuesInternational Journal Of Nanotechnology. 2010.
Growth mode induced carrier localization in InGaN/GaN quantum wellsPhilosophical Magazine. 2007. DOI : 10.1080/14786430701271942.
Bose-Einstein condensation of exciton polaritonsNature. 2006. DOI : 10.1038/nature05131.
Localization-dependent photoluminescence spectrum of biexcitons in semiconductor quantum wiresPhysical Review Letters. 2005. DOI : 10.1103/PhysRevLett.95.177404.
Probing carrier dynamics in nanostructures by picosecond cathodoluminescenceNature. 2005. DOI : 10.1038/nature04298.
Coherence properties of polaritons in semiconductor microcavitiesPhysica Status Solidi a-Applied Research. 2004. DOI : 10.1002/pssa.200304001.
Oscillatory behaviour in the nonlinear emission of semiconductor microcavitiesSemiconductor Science and Technology. 2004. DOI : 10.1088/0268-1242/19/4/110.
Tunnelling of spin-polarized holes in asymmetric double quantum well structuresSemiconductor Science and Technology. 2004. DOI : 10.1088/0268-1242/19/4/125.
Acceleration of a gain-clamped semiconductor optical amplifier by the optical speed-up at transparency schemeIeee Photonics Technology Letters. 2004. DOI : 10.1109/LPT.2004.826047.
Exciton relaxation and level repulsion in GaAs/AlxGa1-xAs quantum wiresPhysical Review B. 2004. DOI : 10.1103/PhysRevB.69.205321.
|Gael Nardin, Gabriele Grosso, Yoan Leger, Barbara Pietka, Francois Morier-Genoud,
Nature Physics, 7, 635 (2011), selected for the cover page
|Quantum turbulence in a polariton Fluid|
|V. Kohnle, Y. L�ger, M. Wouters, M. Richard, M.T. Portela-Oberli, B. Deveaud-Pl�dran
Physical Review Letters, 106, 255302 (2011)
|From single particle to superfluid excitations in a polariton gas|
|K. G. Lagoudakis, B. Pietka, M. Wouters, R. Andr�, B. Deveaud-Pl�dran
Phys. Rev. Lett., 105, 120403 (2010)
|Coherent Oscillations in an Exciton-Polariton Josephson Junction|
|T.K. Para�so, M. Wouters, Y. L�ger, F. Morier-Genoud, and B. Deveaud-Pl�dran
Nature Materials, 9, 655 (2010) DOI: 10.1038/NMAT2787
|Multistability of a Coherent Spin Ensemble in a Semiconductor Microcavity|
|K. G. Lagoudakis, T. Ostatnick, A.V. Kavokin, Y. G. Rubo, R. Andr�, B. Deveaud-Pl�dran
Science, 326, 974-976 (2009)
|Observation of Half Quantum Vortices in an Exciton-Polariton Condensate|
|Portella-Oberli, M.T., Berney, J., Kappei, L., Morier-Genoud, F., Szczytko, J., Deveaud-Pl�dran, B.,
Phys. Rev. Lett., 102, 096402 (2009)
|Dynamics of trion formation in GaAs quantum wells|
|K.G. Lagoudakis, M. Wouters, M. Richard, A. Baas, I. Carusotto, R. Andr�, LS. Dang, B. Deveaud-Pl�dran,
Nature Physics, 4, p.706-710 (2008)
|Quantized vortices in an exciton-polariton condensate|
|J. Kasprzak, M. Richard, S. Kundermann, A. Baas, P. Jeambrun, J. M. J. Keeling, F. M. Marchetti, M. H. Szymanska, R. Andr�, J. L. Staehli, V. Savona, P. B. Littlewood, B. Deveaud and Le Si Dang,
Nature,443, pp.409-414 (2006)
|Bose-Einstein condensation of exciton polaritons|
|J. Kasprzak, M. Richard, A. Baas, B. Deveaud, R. Andr�, J-Ph. Poizat, Le Si Dang
Phys. Rev. Lett., 100, 067402 (2008)
|Second order time correlations within a polariton Bose Einstein condensate in a CdTe microcavity|
|A. Baas, K.G. Lagoudakis, M. Richard, R. Andr�. Le Si Dang, B. Deveaud-Pl�dran
Phys. Rev. Lett., 100, 170401 (2008)
|Synchronized and desynchronized phases of exciton-polariton condensates in the presence of disorder|
|O. El Da�f, A. Baas, J.-P. Brantut, R. Idrissi Kaitouni, J.L. Staehli, F. Morier-Genoud, B. Deveaud, T. Guillet
Appl. Phys. Lett., 88, 061105 (2006)
|Polariton quantum boxes in semiconductor microcavities|
|M. Saba, C. Ciuti, J. Bloch, V. Thierry-Mieg, R. Andr�, Le Si Dang,, S. Kundermann, A. Mura, G. Bongiovanni, J. L. Staehli, B. Deveaud,
Nature, 414, 2001 p. 731 (2001), 414, 2001
|High-temperature ultrafast polariton parametric amplification in semiconductor microcavities|
|Ciuti C, Schwendimann P, Deveaud B, A. Quattropani
Phys. Rev., B62, R4825 (2000)
|Theory of the angle-resonant polariton amplifier|
|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
|Coherent Control of Polariton Parametric Scattering in Semiconductor Microcavities|
|L. Kappei, J. Szczytko, F. Morier-Genoud, B. Deveaud,
Phys. Rev. Lett., 94 147403 (2005)
|Direct observation of the Mott transition in an optically excited semiconductor quantum well|
|M. Merano, S. Sonderegger, A. Crottini, S. Collin, E. Pelucchi, A. Malko, M.H. Baier, E. Kapon, B. Deveaud, J-D. Gani�re
Nature, 438, 479 (2005)
|Probing carrier dynamics in nanostructures by picosecond cathodoluminescence|
|Quochi-F Bongiovanni-G Mura-A Staehli-JL Deveaud-B Stanley-RP Oesterle-U Houdre-R
Phys. Rev Lett., 80, 4733 (1998)., 80, 1998
|Strongly Driven Semiconductor Microcavities - From the Polariton Doublet to an AC Stark Triplet|
|Saba M, Quochi F, Ciuti C, R.P. Stanley, R. Houdr�, U. Oesterle, J.L. Staehli, B. Deveaud, G. Bongiovanni, A. Mura
Phys. Rev. Lett., 85, 385 (2000), 85, 2000
|Crossover from exciton to biexciton polaritons in semiconductor microcavities|
|S. Haacke, R.A. Taylor, R. Zimmermann, I. Bar-Joseph, B. Deveaud
Phys. Rev. Lett., 78, 2228-2231 (1997), 78, 1997
|Resonant femtosecond emission from quantum well excitons : Rayleigh scattering and luminescence|
|B. Deveaud, J. Shah, T.C: Damen, WT. Tsang
Appl. Phys. Lett. 52 1886 (1988)
|Capture of electron and holes in quantum wells|
|B. Deveaud, F. Cl�rot, N. Roy, K. Satzke, B. Sermage, D.S. Katzer
Phys. Rev. Lett., 67, 2355 (1991), 67, 1991
|Enhanced radiative decay of free excitons in GaAs quantum wells|
|B. Deveaud, J. Shah, T.C. Damen, B. Lambert, A. Regreny
Phys. Rev. Lett., 58, p2582 (1987) , 58, 1987
|Bloch transport of electrons and holes in superlattice minibands: direct measurement by subpicosecond luminescence spectroscopy.|
|A. Chomette, B. Deveaud, A. Regreny, G. Bastard
A. Chomette, B. Deveaud, A. Regreny, G. Bastard
Phys. Rev. Lett.,, 57, p1464, 1986
|Observation of carrier localisation in intentionally disordered superlattices|