JRC 2015-2017

Pour nous contacter

Pour nous contacter

Jean-Marc Berroir
Directeur du Labex
directeur@phys.ens.fr

Cécile Margossian
Directrice adjointe du Labex
cecile.margossian@phys.ens.fr

Junior Research Chairs

Chaque année, le Labex recrute troix nouveaux JRC.
Pour en savoir plus sur la procédure de recrutement et le calendrier, cliquez ici.
Voir également ci-dessous l’affiche ‘Creating links that last a lifetime’.

Master de Physique Fondamentale

L’appel à candidatures pour la session 2015/2016 est cloturé :

Pour toute question administrative concernant le master ICFP, vous pouvez nous contacter à l’adresse suivante :
applicationicfp@phys.ens.fr

JRC holders 2015-2018

Joshua Mc Graw

Short scientific biography and research activities

Josh is an experimental soft condensed matter physicist. He studied physics at Dalhousie University (Canada) as an undergraduate, before moving to McMaster University (Canada) to work in the Dalnoki-Veress group, obtaining a PhD in confined polymer physics, organic glasses, and thin film flows in 2012. Then, he worked until 2015 in the Jacobs group at Saarland University (Germany) as an NSERC postdoctoral fellow. There, his investigations focussed mainly on the slip hydrodynamic boundary condition. In all of these studies, central guides were the fascinating properties of surfaces and interfaces, and their effects in flows of sub-micrometric systems. As a JRC in LPS, using his PSL and international collaborative network, Josh intends to accentuate research in these topics at the nanoscale, along with a move towards elastohydrodynamics — a rising field crucial to soft and bio systems.

Selected publications :

S. Haefner, M. Benzaquen, O. Bäumchen, T. Salez, R. Peters, J.D. McGraw, K. Jacobs, E. Raphaël, K. Dalnoki-Veress, Influence of Slip on the Plateau-Rayleigh Instability on a Fibre, Nature Communications (in press) ; arXiv:1501.02194.
J.D. McGraw, O. Bäumchen, M. Klos, S. Haefner, M. Lessel, S. Backes and K. Jacobs, Nanofluidics of thin polymer films : Linking the slip boundary condition at solid-liquid interfaces to macroscopic pattern formation and microscopic interfacial properties, Advances in Colloid and Interface Science, 210 (2014) 13.
Y. Chai, T. Salez, J.D. McGraw, M. Benzaquen, K. Dalnoki-Veress, E. Raphaël, J. Forrest, A Direct Quantitative Measure of Surface Mobility in a Glassy Polymer, Science, 343 (2014) 994.
J.D. McGraw, T. Salez, O. Bäumchen, E. Raphaël, K. Dalnoki-Veress, Self-Similarity and Energy Dissipation in Stepped Polymer Films, Physical Review Letters, 109 (2012) 128303.
S. Cormier, J.D. McGraw, T. Salez, E. Raphaël, K. Dalnoki-Veress, Beyond Tanner’s Law : Crossover Between Spreading Regimes of a Viscous Droplet on an Identical Film, Physical Review Letters, 109 (2012) 154501.

 Stephen H. Donaldson

I received my PhD in chemical engineering from UC Santa Barbara in 2014 under the direction of Prof. Jacob Israelachvili and Prof. Bradley Chmelka. My PhD research focused on measuring physical surface interactions in aqueous colloidal, polymeric, and lipid membrane systems. During my PhD, I helped develop an interaction potential to describe hydrophobic interactions in self-assembling systems, including lipid and surfactant membranes, nanoparticle assemblies, and functionalized interfaces. We also examined controlled adhesives by applying stimulus (light, electrochemistry, pH) or altering surface functionality (hydrophobic, hydrophilic, charged).
My personal research interests have recently transitioned towards biophysics, including biological adhesion, membrane fusion, protein-membrane interactions, and ligand-receptor interactions. As a JRC at ENS, I will collaborate with groups in the Laboratory of Statistical Physics to elucidate membrane adhesion and fusion mechanisms in a diverse set of biological systems, with applications such as neurotransmitter release, G-protein coupled receptor signaling, Alzheimer’s disease progression, and fusion proteins.

Selected publications
“Real time intermembrane force measurements and imaging of lipid domain morphology during hemifusion” D. W. Lee, K. Kristiansen, S. H. Donaldson Jr, N. Cadirov, X. Banquy, J. N. Israelachvili, accepted to Nature Communications, April 2015.
“Developing a general interaction potential for hydrophobic and hydrophilic interactions” S. H. Donaldson Jr, A. Røyne, K. Kristiansen, M. V. Rapp, S. Das, M. A. Gebbie, D. W. Lee, P. Stock, M. Valtiner, J. N. Israelachvili, Langmuir (2015), 31, 2051-2064.
“Asymmetric electrostatic and hydrophobic-hydrophilic interaction forces between mica surfaces and silicone polymer thin films” S. H. Donaldson Jr, S. Das, M. A. Gebbie, M. V. Rapp, L. C. Jones, Y. Roiter, P. H. Koenig, Y. Gizaw, J. N. Israelachvili, ACS Nano (2013), 7 (11), 10094-10104.
“Interactions and visualization of bio-mimetic membrane detachment at smooth and nano-rough gold electrode surfaces” S. H. Donaldson Jr, M. Valtiner, M. A. Gebbie, J. Harada, J. N. Israelachvili, Soft Matter (2013), 9 (21), 5231-5238.
“Hydrophobic interactions modulate self-assembly of nanoparticles” A. Sanchez-Iglesias, M. Grzelczak, T. Altantzis, B. Goris, J. Perez-Juste, S. Bals, G. Van Tendeloo, S. H. Donaldson Jr, B. F. Chmelka, J. N. Israelachvili, L. M. Liz-Marzan, ACS Nano (2012), 6 (12), 11059-11065.
“General hydrophobic interaction potential for surfactant/lipid bilayers from direct force measurments between light-modulated bilayers” S. H. Donaldson Jr, C. T. Lee, B. F. Chmelka, J. N. Israelachvili, PNAS (2011), 108 (38), 15699-15704.

 Leonardo Mazza

Short scientific biography and research activities

After my undergraduate studies at the University of Pisa and at Scuola Normale, in 2008 I moved to Munich to pursue my PhD in the group of Ignacio Cirac at the Max-Planck-Institut of Quantum Optics, obtained in 2012. During my graduate studies I was introduced to the subjects of ultra-cold atoms and quantum simulations, with a strong focus on topological phases of matter. Afterwards, I moved back to Pisa for a post-doc in the group of Rosario Fazio, where I sharpened my skills in the numerical simulations of one-dimensional systems and got interested in out-of-equilibrium quantum physics.

I am currently working on the effect of interactions in cold atomic gases coupled to synthetic gauge potentials and on the possible identification of topological phases of matter in such setups. Parallely, I joined the study of Majorana fermions in low-dimensional superconductors, focussing both on the development of the corresponding number-conserving theory and on the understanding of the quantum-information potential of such quasi-particles. Finally, employing numerical techniques especially suited for one-dimensional systems, I am studying several aspects of their non-equilibrium physics, from energy transport to dissipation.

Selected publications

1) Localized Majorana-like modes in a number conserving setting : An exactly solvable model. Iemini, Mazza, Rossini, Diehl and Fazio, arXiv:1504.04230 (2015).

2) Magnetic crystals and helical liquids in alkaline-earth fermionic gases.
Barbarino, Taddia, Rossini, Mazza and Fazio, arXiv:1504.00164 (2015).

3) Robustness of quantum memories based on Majorana zero modes.
Mazza, Rizzi, Lukin and Cirac, PRB 88, 205142 (2013).

4) Observation of Correlated Particle-Hole Pairs and String Order in Low-Dimensional Mott Insulators.
Endres, Cheneau, Fukuhara, Weitenberg, Schauß, Gross, Mazza, Bañuls, Pollet, Bloch and Kuhr, Science 334, 200 (2011).

5) Wilson Fermions and Axion Electrodynamics in Optical Lattices.
Bermudez, Mazza, Rizzi, Goldman, Lewenstein and Martin-Delgado, PRL 105, 190404 (2010).

 Jacopo de Nardis

I received my master in theoretical physics at the University of Pisa in 2011 under the supervision of Prof. Pasquale Calabrese and then I moved to the University of Amsterdam (UvA) for a PhD under the supervision of Prof. Jean-Sébastien Caux. Here I explored widely the realm of one-dimensional interacting integrable models. Despite the fact that the eigenstates and the spectra of these models are known, the study of their equilibrium and non-equilibrium correlation functions is a challenging task. However they constitute the simplest realizations of truly interacting quantum models, providing therefore an optimal outpost where to understand the role of strong interactions in equilibrium and non-equilibrium quantum physics.
My current research interests are out-of-equilibrium dynamics and equilibrium dynamical correlations of integrable systems in the thermodynamic limit, together with the study of non-equilibrium strongly interacting classical statistical models which are mappable to quantum integrable models (Kardar-Parisi-Zhang equation, Simple Exclusion Processes)

Selected Publications

- M. Panfil, J. De Nardis, J-S Caux, Metastable criticality and the super Tonks-Girardeau gas, Phys. Rev. Lett. 110, 125302 (2013)

- J. De Nardis, B. Wouters, M. Brockmann, J-S Caux, Solution for an interaction quench in the Lieb-Liniger Bose gas, Phys. Rev. A 89, 033601 (2014)

- B. Wouters, J. De Nardis, M. Brockmann, D. Fioretto, M. Rigol, J-S Caux, Quenching the Anisotropic Heisenberg Chain : Exact Solution and Generalized Gibbs Ensemble Predictions, Phys. Rev. Lett. 113, 117202 (2014)

- J. De Nardis and J-S Caux, Analytical expression for a post-quench time evolution of the one-body density matrix of one-dimensional hard-core bosons, J. Stat. Mech. (2014) P12012

- J. De Nardis and M. Panfil, Density form factors of the 1D Bose gas for finite entropy states, arXiv:1411.4537 (2014)

 JRC holders 2016-2019

 Hilton Barbosa de Aguiar

Hilton is an experimentalist working with nonlinear microscopy and spectroscopy of complex soft matter systems (colloidal science, interfacial phenomena, biomedical imaging). His PhD focused on using interface-specific nonlinear optical tools to unravel molecular level details of colloidal particle interfaces (EPFL/Lausanne, jointly with Max-Planck Institute/Stuttgart, September 2011). His post-doc activities focused on nonlinear microscopy of biological systems (Stuttgart University, Stuttgart ; Fresnel Institut, Marseille), both as an instrument developer, or in more fundamental studies on light propagation in complex media. In general, the advanced tools he uses are label-free approaches exploiting the intrinsic vibrational response of molecular systems.

JRC since September 2016, he is currently implementing a Raman microspectroscopy setup (linear and nonlinear using ultrafast laser technology). These label-free tools aim at probing soft matter systems in collaboration with LPS researchers. He is also tackling fundamental questions of light propagation in complex media jointly with LKB researchers (for biomedical imaging).

Selected publications :

"The orientation and charge of water at the hydrophobic oil droplet–water interface".
de Aguiar, de Beer, Strader, Roke. J. Am. Chem. Soc. 132, 2122-2123 (2010)

"Programmable single-pixel-based broadband stimulated Raman scattering".
Berto, Scotte, Galland, Rigneault, de Aguiar. Opt. Lett. 42, 1696-1699 (2017)

"Enhanced nonlinear imaging through scattering media using transmission-matrix-based wave-front shaping".
de Aguiar, Gigan, Brasselet, Phys. Rev. A 94, 043830 (2016)

"Detection of buried microstructures by nonlinear light scattering spectroscopy"
De Beer, De Aguiar, Nijsen, Roke, Phys. Rev. Lett. 102, 095502 (2009)

 Olga Petrova

Olga Petrova is a theoretical condensed matter physicist, currently focusing on various aspects of quantum magnetism. She received her Ph. D. from Johns Hopkins University (USA) in the summer of 2013. She completed her Ph. D. thesis, titled "Topological defects and textures in complex magnets", under the guidance of Prof. Oleg Tchernyshyov. Olga then moved on to her first postdoctoral appointment at the Max Planck Institute for the Physics of Complex Systems (Germany), where she was supported by the Research Fellowship for Postdoctoral Researchers from the Alexander von Humboldt Foundation. Since September 2016, Olga has held the junior research chair at the Ecole Normale Supérieure. Here she has been collaborating on the studies of quantum spin liquids with Nicolas Regnault from Laboratoire Pierre Aigrain, and additionally has been conducting travaux diriges for the M1 Statistical Physics course taught at the ENS.

Selected pulications

"Coulomb potential V (r)= 1/r problem on the Bethe lattice", O Petrova, R Moessner, Physical Review E 93 (1), 012115 (2016)

"Hydrogenic states of monopoles in diluted quantum spin ice", O Petrova, R Moessner, SL Sondhi, Physical Review B 92 (10), 100401 (2015)

"Projective symmetry of partons in the Kitaev honeycomb model", P Mellado, O Petrova, O Tchernyshyov, Physical Review B 91 (4), 041103 (2015)

"Unpaired Majorana modes on dislocations and string defects in Kitaev’s honeycomb model", O Petrova, P Mellado, O Tchernyshyov, Physical Review B 90 (13), 134404 (2014)

Pour nous contacter

Jean-Marc Berroir
Directeur du Labex
directeur@phys.ens.fr

Cécile Margossian
Directrice adjointe du Labex
cecile.margossian@phys.ens.fr

Junior Research Chairs

Chaque année, le Labex recrute troix nouveaux JRC.
Pour en savoir plus sur la procédure de recrutement et le calendrier, cliquez ici.
Voir également ci-dessous l’affiche ‘Creating links that last a lifetime’.

Master de Physique Fondamentale

L’appel à candidatures pour la session 2015/2016 est cloturé :

Pour toute question administrative concernant le master ICFP, vous pouvez nous contacter à l’adresse suivante :
applicationicfp@phys.ens.fr