Search
A positron trap for antihydrogen – POSITRAP
POSITRAP takes place within the framework of an experiment aiming to measure the acceleration due to the Earth on antimatter, which has never been realized. The equivalence principle would be called into question if antimatter antigravitated. The principle of the experiment consists in producing the
Electronic Transport in Topological Insulators – IsoTop
A new class of quantum states of matter with remarkable properties has been recently discovered: the topological insulators. These topological phases result from very special band structures driven by a strong intrinsic spin-orbit coupling. It was first realized by Kane et al. in 2005 that intrinsi
Soliton ensembles in a laser cavity: collective behaviors, phase transitions and application to the generation of optical pulses with high repetition-rate – SOLICRISTAL
The study of collective behaviors for large sets of dissipative solitons is an unexplored and challenging area of fundamental research in nonlinear optics that we plan to investigate experimentally, numerically and theoretically. We expect to find strong analogies between these collective behaviors
Interferometry with high-order Laguerre-gaussian modes for the gravitational wave detections – LAGUERRE
The detection of gravitational waves is one of the major challenges of the contemporary physics. The gravitational waves are ripples of space-time metrics, predicted by the Einstein's general relativity theory and produced by violent astrophysics phenomena, such as coalescences of neutrons stars or
Metrology of hydrogen atom for the determination of the proton charge distribution – PROCADIS
The aim of this project is to obtain a new determination of the proton charge distribution radius Rp. Today Rp is determined from the elastic electron-proton scattering, from the spectroscopy of atomic hydrogen, and, very recently, from the one of muonic hydrogen. This last measurement gives a very
Disorder, interactions, transport in low dimensions: exact methods and results – DIME
While physics is grappling with new problems dominated by strong interactions and (or) correlations, two main strategies are available to the theorists. The first consists in developing sophisticated approximations and numerical techniques for studying ab-initio models; the second in elaborating an
Confronting theory with experiments at the Terascale – TH-EXP@TeV
The aim of this project is to gather the expertise of theorists and experimentalists in order to exploit the information that will become available in the coming years from the Large Hadron Collider (LHC) at CERN, from astroparticle and flavour physics experiments, in a joint effort to identify the
Electron Quantum Optics : Hanbury-Brown Twiss and Hong Ou Mandel experiments with single electron sources – 1shot
The purpose of this proposal is to explore experimentally and theoretically paradigms attributed to quantum optics, with electrons which propagate ballistically in quantum conductors. The electronic analogue of Hanbury Brown and Twiss (HBT) and Hong-Ou-Mandel (HOM) intensity correlation experiments
QUANtum Transport In COrrelated Nanostructures – QUANTICON
The characterization of transport properties of nanostructures is central to numerous works in condensed matter physics. This is particularly true in fundamental research works on quantum properties of electronic transport across nano-objects (quantum dots, nanotubes), or in the field of molecular e
SUPERCONDUCTIVITY, MAGNETISM AND ELECTRONIC PROPERTIES OF NEW IRON PNICTIDES – PNICTIDES
The recent discovery of superconductivity (SC) in the iron pnictides (FePns) has generated great excitement in the scientific community since they appear as a new class of materials with high temperature superconductivity and present high potential for applications. Intensive research efforts are un
Nuclear Energy density functional of Spectroscopic Quality – NESQ
Methods based on the use of Energy Density Functionals (EDFs) are the only ones that can currently be applied to all nuclei but the lightest ones in a systematic manner. Nuclear EDF methods coexist on two distinct levels. On the first one, traditionally call "self-consistent mean-field theory", a s
New Quantum Phases and Topological Properties in Correlated Condensed Matter – NQPTP
Interplay between strong correlations and frustrated geometry offers a generic recipe for experimentalists and theorists searching for materials exhibiting exotic ground-states and unconventional phase transitions which might lead to unsuspected applications. The project describes in details several
excited state of protonated molecules – ESPM
The present proposal is aimed at characterizing the structure, dynamics, and electronic properties of protonated molecules, which implies spectroscopic studies, lifetime measurements, determination of fragmentation dynamics for isolated ions and eventually the effect of solvation on these properties
Quantum Nano Mechanics – QNM
Physicists invented quantum mechanics mainly for explaining the properties of microscopic objects as atoms. Surprisingly, the theory elaborated during the first half of the 20th century equally treats all degrees of freedom, and nothing, in principle, prevents macroscopic objects to behave quantum-m
Possible ground states In 2D disordered systems – POSTIT
The physics of disordered materials has been a long standing object of study but important aspects of this problem are still not understood to date. This field is indeed complex: in those systems, disorder has the double effect of i. modifying and enhancing quantum interferences and ii. of reinforci
Fingering to Fracture – F2F
The character of the proposed research is fundamental in nature. Understanding the formation of amorphous solids, the so-called glass transition, remains a challenge. Interestingly, evidence has mounted in the last decade that the viscous slowing down of glass formers and colloids glasses might b
Interaction and Transport at a Mesoscopic Scale - Experiments – ITEM-Exp
The goal of the project is to reveal and characterize electron interactions in semiconductor nanostructures like quantum point contacts. These interactions are indeed strong at low electron density (below the first conductance plateau) and are thought to be responsible for the conductance anomalies
Pulsed High Magnetic Field Neutron Scattering – MAGFINS
One subject of primary interest in fundamental physics is the study of quantum correlation effects in condensed matter. Intensive research on advanced materials has led to the discovery of new compounds with spectacular properties driven by strongly correlated electrons. High magnetic fields allow t
Imaging calorimetry for the future HEP experiences – CALIIMAX-HEP
Title : Imaging calorimetry for the future High Energy Experiments (HEP) Key words : particle and accelerator physics, imaging calorimetry, particle flow algorithm, power pulsing, PIN diodes Partners : Laboratoire Leprince-Ringuet (UMR7638), Laboratoire de l’Accelerateur Linéaire (UMR8607) Start
Multiscale electron dynamics in gas phase clusters – MUSES
In this project we propose a multi-scale approach to study electron dynamics in clusters and large molecules. We aim at combining experimental & theoretical skills to develop a comprehensive approach covering the range from short fs to long µs timescale. We will make use of modern light sources (fre
Search for low mass Higgs bosons at the LHC with the ATLAS dector – HiggsNet
The search of the Higgs boson is at the heart of the LHC project and one of the most prominent questions in High Energy Physics. Its mass is above 114 GeV/c2, (the LEP limit) and there are numerous experimental and theoretical indirect constraints indicating that the its mass should be below 200 GeV
Fragmentation dynamics of molecules studied with an new electrostatic storage ring. – ANNEAU
This project aims at studying experimentally the relaxation dynamics of molecular systems over a broad range of time with a control on the type and the amount of excitation energy. The molecules under focus go from small molecules such as HDO up to system with much larger size such as polypeptides.
Magnetization manipulation in ferromagnetic GaMnAs – Mangas
The magnetization state of a ferromagnetic object or particle is a simple and reliable bit of information. It has been used for decades to store information on hard disk drives. In these devices the magnetization state is manipulated by applying short and localized magnetic field pulses. Going beyon
Towards coherent radiation produced by particule beam accelerators injected with external lasers – DYNACO
In accelerator-based systems, a strategy for producing coherent radiation consists of injecting external laser pulses on a relativistic electron bunch. The resulting shaping of the electrons (bunching) leads to coherent emission. Recently, such strategies have revealed a very promising potenti
Search for SUSY particles in the galactic halo with FID detectors – FIDSUSY
The most recent measurements of the Cosmic Microwave Background and of supernovae at large redshift, interpreted in the framework of the concordance model, point to a Universe dominated by Dark Matter (23%) and Dark Energy (70%). The necessity for a Dark Matter component in the Universe is m
Novel architecture for very high power ultrashort pulses lasers based on innovative yb-doped crystals – FEMTOCRYBLE
Directly diode-pumped femtosecond lasers delivering high powers is one of the hottest and most challenging topics of nowadays. In this point of view, numerous international groups of research are investigating the use of Yb-doped materials. It is admitted now that only ytterbium doped crystals can p
IRRADIATION OF COLD MOLECULAR NANOSYSTEMS – COLDIRR
The irradiation of biomolecular nanosystems in the gas phase represents a major current research field in radiation science. From an experimental standpoint, it has great potential for new applications in analytical sciences and for the development of new synthesis techniques. Concurrent theoretical
Crossing the granular fluid-glass transition : soft modes, acoustics and rheology – JamVibe
.Granular systems are known to display jamming, i.e. a sharp transition between fluid-like and solid-like states. The aim of this project, through the scope of granular matter under vibration, will address explicitly the relation between internal relaxation processes (soft-modes, granular reorganiza
Development and implementation of new exchange-correlation functionals in density-functional theory (DFT). – Dinf DFT
Ab initio electronic-structure calculations performed in the framework of the density-functional theory (DFT) require accurate exchange-correlation functionals in order to take into account the electron interactions. This is indeed the only mandatory approximation in this kind of calculations. The a
Hurricanes in a soap bubble – cyclobulle
This project aims at understanding the movement and intensity variations of single vortices, which we produce in a novel experimental set up based on heating a half soap bubble at its equator and cooling it at the pole. The displacement of these votices turns out to share similarities with that of h