Depuis mars 2022, nous proposons un spectacle intitulé « Supraconducteur ! », qui vulgarise pour tous publics la supraconductivité et la mécanique quantique. Il a été joué à 22 reprises, le plus souvent devant des publics scolaire (du CM2 à la classe préparatoire) ou étudiants.
« Supraconducteur ! » est un Impromptu Scientifique, forme théâtrale inventée par le Groupe n+1, de la coopérative...
In its two-arm geometry, the FALSTAFF spectrometer will aim at determining the energy dependence of neutron-induced fission observables such as the fragment characteristics (mass, charge and kinetic energy) and reconstructed quantities like total kinetic energies or prompt-neutron multiplicities, which require the detection in coincidence of both fission fragments. FALSTAFF is based on the...
Space gravimetry missions such as GRACE or GOCE determine the Earth
gravity field with great accuracy [1]. The data gathered are very useful in
the sciences of climatology, hydrology or geophysics and to understand global
climate change. These missions board state-of-the-art space electrostatic accelerometers
displaying a very good sensitivity but also a long-term drift. By
combining an...
The transition to turbulence is progressive when the flows under consideration are subject to linear instabilities. Landau-type modal approaches (instability cascade), including the possibility of chaos à la Ruelle-Takens, offer an appropriate conceptual framework for the globally supercritical case, as for natural convection.
Open flows, particularly those controlled by wall effects, are...
Photonic quantum technologies represent a promising platform for several quantum information applications, ranging from long-distance communications to the simulation of complex phenomena. On the one hand, the advantages offered by single photons (robustness to decoherence, propagation over very large distances) make them the candidate of choice to carry quantum information in a wide variety...
While nearly half of all crystals exhibit topological properties, little is known about topology in amorphous materials. In this study, we developed a model of amorphous chiral Kramer-Weyl semimetals, where widely used topological markers such as the Bott index or the local Chern marker are trivially zero due to time-reversal symmetry. We thus proposed an alternative way to characterize the...
Les simulateurs quantiques conçus à partir de réseaux d'atomes de Rydberg ont obtenu des résultats impressionants ces dernières années, notamment par leur capacité à émuler des grands systèmes de spins en interaction à deux dimensions. Cependant, même à température cryogénique, le temps de vie des atomes de Rydberg est relativement court quand leur nombre quantique orbital $l$ est faible. Des...
La redécouverte récente dans les collections de l’université de Lille de 15 plaques photographiques réalisées par le procédé interférentiel de Gabriel Lippmann a révélé tout un pan méconnu de l’histoire de ce procédé. Ces plaques ont en effet été réalisées par Auguste Ponsot, un physicien oublié, qui a pourtant largement contribué à l’amélioration du procédé.
Le principe de la photographie...
En métrologie temps-fréquence, une horloge atomique est un capteur quantique qui verrouille un signal d’interférence produit par un oscillateur électromagnétique externe sur un système quantique à 2 niveaux d’énergie. On parle aussi de qubit sur lequel on effectue une interrogation ou spectroscopie de type Ramsey à l’aide d’une séquence d’impulsions électromagnétiques qui génèrent des...
A strong potential for space applications is anticipated from the performances of inertial sensors based of cold atom interferometry on ground. Spatial geodesy missions could benefit from the high level of stability and accuracy demonstrated by these instruments [Carraz et al. 2014]. Mission proposals aiming at testing fundamental laws of physics in space are also based on atomic sensors [Tino...
La convection thermoélectrique apparaît dans un liquide diélectrique sous l'action d'une force diélectrophorétique de Helmholtz [1] induite par un gradient de température et un champ électrique inhomogène de haute fréquence. Cette force contient une partie non conservative qui peut être une source de vorticité barocline dès qu'elle dépasse une valeur critique (seuil). Elle peut être utilisée...
WTe2, a transition metal dichalcogenide with large spin-orbit interactions, is predicted to have striking topological properties that combine type II Weyl semimetal character with second-order 3D topological insulator (SOTI) character. SOTIs are characterized by topologically protected (insensitive to disorder) helical 1D states at their hinges. 1D states located at certain edges of multilayer...
Atmospheric pressure non-thermal plasma is widely used for various nanoscale material fabrication techniques [1], which are becoming increasingly critical for optoelectronics materials and devices, such as composite transparent conductive electrodes and all-oxide solar cells [2]. In particular, plasma has been demonstrated to assist the atmospheric pressure spatial atomic layer deposition...
Dans ce poster, nous présentons un nouveau dispositif de diffusion Raman résolue en temps capable de sonder la dynamique hors-équilibre induite par une impulsion lumineuse dans les matériaux quantiques. Le dispositif est basé sur une source laser Yb amplifiée émettant à 1.03 micron couplée à un compresseur externe permettant d'obtenir des impulsions de 60fs à des taux de répétition de 125kHz....
Animal evolution, such as vertebrate evolution, is driven by random mutations at the genome level. However, it has long been suggested that there exist physical constraints which limit the set of possible outcomes. In vertebrate evolution, it has been observed that head features, notably in the genus homo, can be ordered in a morphological diagram such that, as the brain expands, the head...
We explore theoretically how the topological properties of 2D materials can be manipulated by cavity quantum electromagnetic fields for both resonant and off-resonant electron-photon coupling, with a focus on van der Waals moiré superlattices. We investigate an electron-photon topological Chern number for the cavity-dressed energy minibands that is well defined for any degree of hybridization...
Since the 1980s, physicists have come to realize that N>1 N-band structures can harbor, even when adiabatic, properties inherently different from a single band situation. These properties can be traced to two geometric quantities named the quantum metric and the Berry curvature, both describing a geometry of information associated to the band structure. These give rise to a plethora of new...
The strongly correlated material $VO_2$ displays a metal-to-insulator (MIT) transition when going below $T_{MIT}=280K$. Alongside this electronic transition, the material undergoes a structural transition from a rutile structure in the metallic phase to a monoclinic structure in the insulating phase. These simultaneous transitions have created a long-lasting debate within the community: is the...
Capsid assembly modulators (CAMs) are antiviral molecules that disturb the formation of icosahedral viral capsids, in particular, those of the Hepatitis B virus (HBV). We report an integrated, physics-driven study elucidating quantitatively the effects of two classes of CAMs on HBV capsid assembly. Time-resolved small-angle X-ray scattering measurements revealed accelerated self-assembly...
The nonperturbative interaction between cavity photons and quantum well excitons results in the creation of hybrid light-matter excitations known as exciton-polaritons. They merge the substantial nonlinearity of the excitonic component with the photonic component, whose potential landscape can be conveniently designed in micro-fabricated micropillar lattices [1]. These aforementioned features...
Les semi-métaux de Weyl et de Dirac sont des matériaux abritant des états de la matière appelés états topologiques, états qui sont robustes sous de faibles perturbations car protégés par les symétries au sein de ces matériaux. Cette topologie particulière leur confère diverses propriétés électroniques remarquables, telles qu’une dispersion linéaire au voisinage de leurs points nodaux (point de...
Co3Sn2S2 a kagomé semi-metallic half-metal that displays a large anomalous Hall effect [1] as well as its Nernst [2] and thermal Hall [3] counterparts. Thanks to the low density of carriers, mobility is high and quantum oscillations are easily detectable [3]. This material is known to becomes ferromagnetic below ~175 K, however its exact magnetic texture is still unclear. Proposed magnetic...
Single-molecule data are of great significance in biology, chemistry, and medicine. However, new experimental tools to characterize, in a multiplexed manner, protein bond rupture under force are still needed.
Acoustic Force Spectroscopy (AFS) is a novel single molecule force spectroscopy technique that uses standing acoustic waves to robustly apply piconewton forces in parallel to several...
Depuis 2016, nous mettons à la disposition des étudiants de Master des expériences d’optique quantique à base d’une source de photons intriqués afin de leur faire réaliser eux-mêmes une violation des inégalités de Bell. Au fil des ans nous avons enrichi notre expérience et réalisé successivement des battements de photons uniques, une optimisation du protocole de violation des inégalités de...
FIFRELIN is a fission fragment de-excitation Monte Carlo code that has been developed for more than a decade at CEA-Cadarache [1]. Its accurate predictions using up-to-date nuclear models and databases, regarding neutron/$\gamma$/electron emissions, are now at the state-of-the-art in the fission community [2]. Recently this code has started to become more than a fifrelin$^1$ for the neutrino...
We develop a serie of laboratory-scale model experiments to explore the dynamics and instabilities of liquid thin films inspired by geophysics [1,2]. Laccoliths are pockets of magma whose growth is accompa- nied by deformations of neighbouring rock layers. Within certain limits, these dynamic formations can be compared to liquid drops covered with a thin elastic membrane. We revisit the...
Fission properties of nuclear matter in the new region of asymmetric fission were investigated using fusion-fission reactions $^{35}$Cl+ $^{141}$Pr $\rightarrow$ $^{176}$Os$_{100}$, $^{35}$Cl+$^{142}$Nd $\rightarrow$ $^{177}$Ir$_{100}$ and $^{35}$Cl+ $^{144}$Sm $\rightarrow$ $^{179}$Au$_{100}$, in the excitation energy interval 40-70 MeV. The studied fission fragment mass distributions...
Light-pulse atom interferometry, where light pulses are used as atom beam splitters, has led to extremely sensitive and accurate quantum sensors that offer many applications in fundamental physics, geosciences and inertial navigation. Until recently, light-pulse atom interferometry had only exploited continuous-wave (cw) laser sources. During this talk, I will present atom interferometers...
The field-effect transistor is the basis technology of semiconduc-
tor nanoscale devices1. It was believed that a field-effect transistor
(FET) is impossible in superconductors due to the high charge den-
sity and since the electric field decays exponentially from the surface.
In recent papers show that superconductivity in various systems can
be suppressed by the application of gate...
The use of nanoparticles (NP), on purpose or not, in agriculture or in different industrial sectors is a factor of their dissemination in the environment. Therefore, plants come into direct contact with NP and to date, knowledge about their impact on the mechanical properties of plant cell walls is still insufficient.
In this work, we observed cell wall mechanical properties changes of...
Among the various observables of fission, cross sections are among the most directly connected to applications, especially nuclear energy. The requirement on precision has become more and more stringent over time, with aims as low as 3% for neutron-induced reactions. This is a considerable experimental challenge, since one must deal with radioactive materials and perform measurements using an...
Le projet HTTP (projethttp.univ-grenoble-alpes.fr) visait un public d’IUT, Licences professionnelles, Licences de sciences et technologies (ANR « Hybridation des formations de l'enseignement supérieur »). 37 actions, touchant environ 200 enseignants et 10 000 étudiants, avaient pour objectif d’améliorer la continuité des activités pratiques dans un contexte de crise sanitaire. 23 actions...
In future nuclear fusion reactors such as ITER, the tungsten (W) divertor will withstand hydrogen isotopes and helium (He) ion flux of the order of 1024 m-2 s-1. The interaction of charged particles with W can induce modifications in the material, such as surface blisters (in the case of deuterium, D) and near-surface bubbles (for He). Such modifications can be responsible, for example, of an...
The rise of quantum technologies, especially the development of quantum networks, has made it important to develop reliable and robust quantum nodes which can communicate with each other through exchange of qubits. The biggest challenge in the way of developing such networks is to find suitable qubits which do not easily succumb to decoherence. Employing a scheme that relies on the coupling...
La plateforme basée sur les ions piégés refroidis par laser est parmi les meilleurs candidats pour le développement de l’informatique quantique future. Cette situation a engendré un grand effort de recherche mondiale visant la mise à l’échelle et l’intégration des dispositifs de piégeage qui permettent l’exploitation d’ions uniques comme support du traitement de l’information. Dans ce cadre,...
Many studies are devoted to functionalized metallic nanoparticles, for many applications: in Physics, due to their localized surface plasmon resonances; in Chemistry, due to their specific catalytic properties; in Biology, due to their optical or magnetic properties coupled to their potential for targeting and vectorization of bioactive molecules within living cells. In solution, the...
After more than thirty years of research, the microscopic mechanism of high-Tc superconductivity is still unknown. However, the remarkable universality of the cuprate Tc-dome suggests a very fundamental unifying principle.
The superconducting gap is known to persist above Tc in the enigmatic pseudogap phase. So, contrary to BCS, the gap cannot be the order parameter of the...
We have measured the field dependence of the critical current of a
bismuth nanowires under superconducting proximity effect for different field orientations. This field dependence exhibits a large asymmetry in magnetic field depending on the sign of the current (so called Josephson Diode effect). The shift in the Josephson interference pattern of critical current can be interpreted in terms...
La Bande Dessinée (BD) réalisée pour les 150 ans de la Société Française de Physique (SFP) vise à faire connaître la recherche en physique à un large public. Elle a été écrite pour être comprise dès la préadolescence (niveau scolaire 6ieme). Son objectif est de présenter le métier de chercheur qui, pour celles et ceux qui l’ont choisi, est source d’aventures et de découvertes scientifiques et...
La couleur est dès le plus jeune âge un objet d’émerveillement, que ce soit lors de la pratique des arts plastiques (peinture, coloriage) ou lors de la découverte de livres et de films. Elle est omniprésente dans le quotidien des enfants, de leurs habits et jouets aux écrans, en passant par les nouveaux éclairages d’ambiance. Or la couleur est rarement présente à l’école primaire en tant...
Dans l’écoulement de Couette-Taylor, l’écoulement produit entre deux cylindres coaxiaux en rotation, la transition vers la turbulence peut être accompagnée de régimes de coexistence laminaire-turbulente qui peuvent prendre la forme de spots ou d’hélices de turbulence présents dans un écoulement par ailleurs laminaire. Ces régimes ont été étudiés depuis leur découverte dans les années soixante...
Le séchage d'une goutte d'une suspension colloïdale est connu pour générer un transport des particules vers la ligne de contact, ce que l'on appelle l'effet "tache de café". Ce transport est causé par le changement de volume, qui déclenche un flux interne pour rester dans le minimum de l'énergie de tension de surface, c'est-à-dire une calotte sphérique pour une goutte sessile.
Dans cette...
Le cours de Physique de Karlsruhe a été proposée par le département de didactique de la physique de l’université de Karlsruhe à partir des années 2000. Il est disponible gratuitement en plusieurs langues sur le site suivant : https://www.physikdidaktik.uni-karlsruhe.de .
A l’occasion de la traduction en français des 5 tomes « niveau lycée » (mécanique, thermodynamique, électromagnétisme,...
We consider a Josephson bijunction consisting of three superconducting reservoirs connected through two quantum dots. In equilibrium, the interdot coupling is sizable only for distances smaller than the superconducting coherence length. Application of commensurate dc voltages results in a time-periodic Hamiltonian and induces an interdot coupling at large distances. The basic mechanism of this...
We are interested in using quantum computers for analog quantum simulation.
Quantum computers offer the possibility to engineer a variety of Hamiltonians that are relevant for investigating non-equilibirum quantum phenomena.
Quantum states properties, including entanglement, can be then measured with high fidelity, in order to reveal universal features of quantum dynamics.
I will...
Human adenovirus contains a double-stranded DNA genome packed with the positively charged viral proteins V, VII and X and the terminal protein. Protein V is believed to connect the inner capsid surface to the outer layer of the nucleoprotein core. Here we explored the mechanical properties and in vitro disassembly of particles lacking protein V (Ad5-ΔV). The Ad5-ΔV particles were softer and...
Les microcavités semiconductrices, composées d’un puits quantique intégré entre deux miroirs de haute réflectivité, font apparaître, dans le régime de couplage fort, des polaritons, des états mixtes exciton-photons. Ces quasi-particules ont des propriétés extraordinaires reliés à leur nature hybride [1]. La partie photonique des polaritons permet de les confiner facilement dans des...
Le développement des dispositifs tels que les ordinateurs ou simulateurs quantiques nécessite de pouvoir disposer d’un grand nombre de bits quantiques, ou qubits, allant de quelques centaines à quelques millions. Et la manipulation de ces qubits, quel que soit le support physique envisagé, atomes, ions, photons... Implique, pour des raisons pratiques, un processus de miniaturisation des...
The quantum Hall resistance standard is a key element for the dissemination of electrical units within the International System of Units (SI). Currently, the realization of this resistance standard at the best level of uncertainty $\left(10^{-9}\right.$ in relative value) mainly relies on the use of GaAs-based quantum Hall effect (QHE) devices , which requires demanding operating conditions,...
We study interacting Helium-4 Bose gases in an optical lattice, realising the 3D Bose-Hubbard hamiltonian [1]. This hamiltonian holds a quantum phase transition, from a superlfuid to a Mott insulator, and we report our on-going efforts to characterise many-body correlations in the vicinity of this transition. To this aim, we use a unique experimental probe which consists in detecting...
Our projects aims at achieving breakthroughs in focused ion and electron beams, exploiting monochromaticity in the low-energy domain (eV-keV). Using ionization of a neutral atomic species and simultaneous production, detection and control of both the ion and the electron we propose to develop three innovative prototypes:
• 1) A focused ion beam using feedback control with unprecedented...
Les plaies chroniques guérissent difficilement et nécessitent souvent plusieurs mois de soin. Elles sont en partie dues à une sur-inflammation et une sur-infection. Bien que le CO ait mauvaise presse, car toxique à partir d’une certaine quantité, il est produit naturellement dans les cellules et joue une rôle clef dans les processus anti-inflammatoires [1].
Les plasmas froids à pression...
Correlated fermion systems often display complex phase diagrams with different competing orderings. A theoretical description of competing instabilities remains one of the major challenges of modern condensed matter physics. We introduce a multi-channel extension of the recently developed fluctuating field approach to tackle this problem, based on a variational optimisation of a trial action...
We present two different methods to collimate atomic and molecular ultracold ensembles. The idea of both methods is to limit the expansion rate of the considered ensemble while preserving its phase space density [1].
The first method uses time-averaged potentials to form an all-optical matter- wave lens [2]. By using 39K instead of 87Rb in the same apparatus, magnetic Feshbach resonances...
But : Dans ce travail, on se propose de suivre un mécanisme de lithogenèse spécifique à la formation de calcul de phosphate de magnésium et d'ammonium hexahydraté (NH4MgPO4.6H2O) communément appelé struvite généré par l’infection des voies urinaires.
Matériel et méthodes : Une cohorte de 1553 calculs de l’arbre urinaire collectés au niveau de la région « Est Algérien » a été considérée...
Non-equilibrium cluster-cluster aggregation of scaffold proteins has been hypothesized to underly
the formation and maintenance of inhibitory postsynaptic domains of neurons, where the desorption
of scaffold proteins into the cytoplasm imposes a cut-off on possible aggregate sizes and gives rise to
a stationary size distribution. Here, we investigate the case of non-equilibrium...
L'étude des biomolécules en phase gazeuse revêt plusieurs challenges expérimentaux. Principalement 1) leur évaporation peut mener à leur fragmentation et 2) les nombreuses transitions électroniques accessibles suite à la photoabsorption congestionnent les spectres électroniques et rendent difficile leur interprétation.
Afin de contourner ces deux écueils expérimentaux, nous mettons au point...
One of the most important fission quantities is the fission barrier as it defines the fission probability. The most direct way (and often the only way) to obtain fission barriers is to measure the fission probability as a function of the excitation energy of nuclei formed by transfer and inelastic scattering reactions. In [1] we have shown that the measurement of the fission probability...
One-dimensional (1D) interacting Bose gases offer a richness of physical regimes with striking specificities compared to three dimensions. For instance, in the strongly interacting regime, appearing at low temperature and large interactions, the hamiltonian of the system can be mapped into the one of non-interacting spinless fermions.
In order to access such physics, we have built a cold...
I will present our results on applying quantum optimal control to shape the phase-space distribution of Bose-Einstein condensates in a one-dimensional optical lattice. Through an optimised time-dependent modulation of the lattice position, we can tailor the collective wavefunction of the condensate [1]. Using this tool, we can prepare, in the phase space of each lattice site, a variety of...
This presentation focuses on the application of optimal control techniques to maximize the Quantum Fisher Information (QFI), in order to estimate the value of a specific parameter of the model system. This study is a joint work with the experimental group of Pr. D. Guéry-Odelin in Toulouse University (France). The goal is to manipulate the motional states of an atomic Bose-Einstein condensate...
Dans un vortex, il est bien connu qu'une particule ponctuelle plus dense que le fluide ambiant est expulsé du centre du vortex par la force centrifuge. Nous montrerons ici que ce n'est pas toujours le cas pour un disque flexible légèrement plus lourd que fluide. En effet, sous l'effet du champ de pression, le disque peut adopter une forme qui le fait tourner autour du centre du vortex à un...
L'enseignement de la relativité continue de suivre la démarche historique, soit en mettant en avant la notion de groupe de transformation initiée par Poincaré, soit en suivant la méthode heuristique d'Einstein.
L'apport de Minkowski fut de voir dans l'intervalle une grandeur géométrique, indépendante de tout référentiel ; une grandeur absolue que l'on peut écrire dans la carte de l'univers....
In recent years, color centers of crystal systems have drawn a lot of attention due to their superior properties for quantum technology. By definition color centers are a certain class of point defects created by vacancies, misplaced atoms, or atom-vacancies complexes with the ability to photoluminesce, in addition, they can also be paramagnetic and responsive to magnetic fields. The most...
Le transfert de temps et fréquence par fibre optique est devenu un domaine incontournable de la métrologie du temps et fréquence. De par ses performances de transfert inégalées, il permet de comparer les meilleures horloges optiques distantes de milliers de kilomètres sans dégradation de la mesure [1], permettant ainsi des avancées importantes vers une future redéfinition de la seconde basée...
Les métallophthalocyanines (MPc) sont des molécules synthétiques, symétriques, cousines chimiquement des porphyrines, briques essentielles de nombreuses molécules du vivant (hème, chlorophylle, vitamine B12...). Ces systèmes moléculaires complexes présentent une photophysique et photochimie très riches suite à la photoabsorption. Nous avons étudié plusieurs MPc en phase gazeuse sur la ligne de...
Precise control of many-body Rydberg interactions in atomic registers is extremely relevant for quantum computing applications. In this regard, the use of RF and microwave radiation for the induction of interatomic transitions is of great interest nowadays. In this research, we investigated and numerically modeled RF-induced three-body Förster resonances of a fine-structure-changing type...
En métrologie temps-fréquence, une horloge atomique est un capteur quantique qui verrouille un signal d’interférence produit par un oscillateur électromagnétique externe sur un système quantique à 2 niveaux d’énergie. On parle aussi de qubit sur lequel on effectue une interrogation ou spectroscopie de type Ramsey à l’aide d’une séquence d’impulsions électromagnétiques qui génèrent des...
Study of fibroblast contractility on 2D and 3D soft gels
Sara Faour1,2, Cyrille Vezy1, Stephanie Salesse2, Stephane Dedieu2 and Rodolphe Jaffiol1
1 L2n, EMR CNRS 7004, UTT, Troyes, France
2 MEDyC, UMR CNRS 7369, URCA, Reims, France
Email: sara.faour@utt.fr
Fibroblast activation is a multi-step process defined by increased contractile properties and associated...
Isospin transport is investigated with 40,48Ca+40,48Ca reactions at 35 MeV/nucleon, measured with the coupling of the VAMOS high acceptance spectrometer and the INDRA charged particle multidetector.
Using the projectile remnant detected with VAMOS and carefully selected light-charged-particles measured in coincidence with INDRA, a reconstruction method is applied to estimate the excited...
Phase-biased superconducting weak links host Andreev bound states, which are at the origin or the Josephson coupling. The phase biasing is realized by placing the weak link in a low-inductance superconducting loop, threaded by a magnetic flux. Microwave pulses can induce transitions between configurations differing by states occupations, and various kinds of “Andreev qubits” using few-channel...
Interferometric measurements of mechanical displacements are nowadays limited by quantum noises both in gravitational interferometers and tabletop optomechanics experiments. These quantum noises are twofold: the Quantum Shot Noise (QSN) related to the laser's phase noise, and the Quantum Radiation Pressure Noise (QRPN) arising from the mechanical response to a fluctuating radiation pressure....
The acceleration of gravity is of great interest in different subjects, from geology to the redefinition of the kilogram. The atomic interferometry is a mature technology used to build inertial sensors able to measure that value in an absolute and accurate way. An atomic cloud of colds rubidium atoms is prepared into a vacumm chamber. One can then use contra propagating Raman light pulses to...
Hooke’s law is widely used in physics. In material science and biomechanics, materials are often characterized by their elastic or Young's modulus ($E$), and Hooke's law is often described in terms of the stress ($σ$, force per unit area) and the strain ($ε$, relative deformation $x/x_0$) as $σ=E·ε$. Pasta is one of the most consumed dishes globally, so it is familiar to most students. To...
Le graphène a été largement étudié au cours des 20 dernières années pour ses propriétés électroniques, mais ses applications technologiques restent limitées par l'absence de gap à température ambiante [1]. C'est pourquoi des éléments plus lourds du groupe IV ont été utilisés pour former une structure en nid d'abeille similaire à celle du graphène afin d'induire une ouverture de gap par...
In recent years, coupling atoms to nanophotonic structures has become a promising approach to realize nonlinear quantum optical protocols, offering better scalability and figures of merit than free-space approaches, as well as new paradigms for atom-photon interactions. In particular, the use of nanophotonic waveguides has emerged as powerful tool for such implementations, due to the strong...
Xperium est un concept original et un espace inédit créé pour favoriser le dialogue science – société. On y présente la « recherche en train de se faire » à l’Université de Lille, notamment dans les laboratoires de physique. On la montre, on la fait vivre, on la met à la portée de tous, on l’incarne grâce à la médiation de jeunes doctorants qui accueillent le public pour parler de leur...
