Concept

Fonction périodique

Publications associées (125)

Coherent optical control of the wave function of zero dimensional exciton polaritons

Benoît Marie Joseph Deveaud, Vincenzo Savona, Gaël Nardin, François Morier-Genoud, Marcia Portella Oberli, Barbara Pietka, Taofiq Paraïso, Davide Sarchi, Ounsi El Daïf, Roland Cerna

Control of the wave function of confined microcavity polaritons is demonstrated experimentally and theoretically by means of tailored resonant optical excitation. Three dimensional confinement is achieved by etching mesas on top of the microcavity spacer l ...

2009

Attention operates on non-retinotopic feature maps in visual search

Michael Herzog, Marco Boi

At the heart of feature integration theory is a master map which operates on dimension-based feature maps. It is assumed that these feature maps are organized retinotopically. If in conjunction search, for example, a horizontal green line has to be searche ...

2009

From sawtooth to profile control: developing feedback control using ECRH/ECCD systems on the TCV tokamak

Stefano Coda, Timothy Goodman, Federico Alberto Alfredo Felici, James Paley

Real time control of heating systems is essential to maximize plasma performance and avoid or neutralize instabilities under changing plasma conditions. Several feedback control algorithms have been developed on the Tokamak a Configuration Variable (TCV) t ...

Plasma Phys. Control. Fusion2009

Many-body calculation of the spatial extent of the wave function of a nonmagnetic impurity in a d-wave high-temperature superconductor using the t-J model

Scanning tunneling microscopy (STM) by providing images of the effects of individual zinc impurities in cuprate superconductors with unprecedented atomic resolution offers a stringent test to models of correlated fermions for high-temperature superconducto ...

2009

The scale axis transform

Mark Pauly

We introduce the scale axis transform, a new skeletal shape representation for bounded open sets O ⊂ &Rdbl;d. The scale axis transform induces a family of skeletons that captures the important features of a shape in a scale-adaptive way and ...

2009

Dynamical system for learning the waveform and frequency of periodic signals - application to drumming

Auke Ijspeert, Sarah Dégallier Rochat

The paper presents a two-layered system for learning and encoding a periodic signal and its application to a drumming task. The two layers are the dynamical system responsible for extracting the main frequency of the input signal, based on adaptive frequen ...

2008

Femtosecond dynamics of electronic states in the Mott insulator 1T-TaS2 by time resolved photoelectron spectroscopy

Matthias Wolf, Helmuth Berger, Luca Perfetti

Photoexcitation of the Mott insulator 1T-TaS2 by an intense laser pulse leads to an ultrafast transition toward a gapless phase. Besides the collapse of the electronic gap, the sudden excitation of the charge density wave (CDW) mode results in periodic osc ...

2008

Large low speed hydrogenerators - UMP and additional damper losses in eccentricity conditions

Stefan Keller

The present thesis is an advanced contribution to the design process of large synchronous generators with high number of poles. It proposes two original contributions, the first one allowing a very precise prediction of the no-load voltage and of the no-lo ...

EPFL2007

An Intorduction to the Interface Between C and R

This manual will be useful for people looking to extend R with the C compiled code. The motivation for using the C interface with R may be bidirectional. For statisticians programming mainly in R, an interface to C provides fast execution of code and bette ...

2007

0D microcavity polaritons

Ounsi El Daïf

Polaritons are half-matter half-light quasiparticles, arising, in a two-dimensional semiconductor microcavity, from the strong-coupling between an exciton (an elementary electronic excitation of a crystal) and a photon. This thesis presents the fabrication ...

EPFL2007

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