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Publications associées (135)

Dephasing effects on coherent exciton-polaritons and the breakdown of the strong coupling regime

Benoît Marie Joseph Deveaud, Daniel Oberli, Marcia Portella Oberli, Stéphane Trebaol, Mitchell David Anderson, Naotomo Takemura, Souvik Biswas

Using femtosecond pump-probe spectroscopy, we identify excitation-induced dephasing as a major mechanism responsible for the breakdown of the strong coupling between excitons and photons in a semiconductor microcavity. The effects of dephasing are observed ...

American Physical Society2015

Long- versus Short-Range Scattering in Doped Epitaxial Graphene

Klaus Kern, Christian Reinhard Ast, Carola Strasser

Tuning the electronic properties of graphene by adatom deposition unavoidably introduces disorder into the system, which directly affects the single-particle excitations and electrodynamics. Using angle-resolved photoemission spectroscopy (ARPES) we trace ...

Amer Chemical Soc2015

Measurement and Shaping of Biphoton Spectral Wave Functions

In this work we present a simple method to reconstruct the complex spectral wave function of a biphoton, and hence gain complete information about the spectral and temporal properties of a photon pair. The technique, which relies on quantum interference, i ...

Amer Physical Soc2015

Polaritonic Feshbach resonance

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura

A Feshbach resonance occurs when the energy of two interacting free particles comes into resonance with a molecular bound state. When approaching this resonance, marked changes in the interaction strength between the particles can arise. Feshbach resonance ...

Nature Publishing Group2014

Experimental Study of Non-Ideal Phenomena Affecting Magneto-Rheological Elastomers Piezoresistivity

Yves Perriard, Yoan René Cyrille Civet, Daniel Grivon

Magneto-Rheological Elastomers (MREs) represent emerging composite materials consisting of small magnetic particles dispersed in a highly elastic polymeric matrix. Particles interactions with external fields (magnetic and electric) and external stresses re ...

Ieee2014

Latest LHCb results

Maurizio Martinelli

The LHCb experiment is one of the major research projects at the Large Hadron Collider. Its acceptance and instrumentation is optimised to perform highprecision studies of flavour physics and particle production in a unique kinematic range at unprecedented ...

EDP Sciences2014

Development of a level set methodology to simulate grain growth in the presence of real secondary phase particles and stored energy – Application to a nickel-base superalloy

Roland Logé

The influence of secondary phase particles on grain growth (Zener pinning) is simulated in two dimensions using a level set method. Several simulations with circular particles are performed to study the influence of particle surface fraction and distributi ...

Elsevier2014

Amplifying Dynamic Nuclear Polarization of Frozen Solutions by Incorporating Dielectric Particles

David Lyndon Emsley, Aaron James Rossini, Dominik Józef Kubicki

There is currently great interest in understanding the limits on NMR signal enhancements provided by dynamic nuclear polarization (DNP), and in particular if the theoretical maximum enhancements can be achieved. We show that over a 2-fold improvement in cr ...

American Chemical Society2014

Automation of One-Loop Computations for Scattering Amplitudes and Applications to Collider Phenomenology

Valentin Hirschi

This thesis presents the automation of loop computations for the calculation of Next-to-Leading Order contributions to theoretical predictions for particle colliders. We start with the general techniques for performing such predictions and how they can be ...

EPFL2013

Virus removal and inactivation by iron (hydr)oxide-mediated Fenton-like processes under sunlight and in the dark

Tamar Kohn, Jessica Ivana Nieto Juarez

Advanced oxidation processes (AOPs) have emerged as a promising alternative to conventional disinfection methods to control microbial water quality, yet little is known about the fate of viruses in such processes. In this study, we investigated the fate of ...

Royal Society of Chemistry2013

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