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TZID:Europe/Paris
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261002T110000
DTEND;TZID=Europe/Paris:20261002T120000
DTSTAMP:20260925T162127Z
CREATED:20260925T162127Z
LAST-MODIFIED:20260925T162127Z
UID:10000278-1790938800-1790942400@sfp-alpes.fr
SUMMARY:Joerg SCHMALIAN
DESCRIPTION:Superconductivity in kagome metals due to soft loop-current fluctuations\nRésumé : \nWe demonstrate that soft fluctuations of translation symmetry-breaking loop currents provide a mechanism for unconventional superconductivity in kagome metals that naturally addresses the multiple superconducting phases observed under pressure. Focusing on the rich multi-orbital character of these systems\, we show that loop currents involving both vanadium and antimony orbitals generate low-energy collective modes that couple efficiently to electrons near the Fermi surface and mediate attractive interactions in two distinct unconventional pairing channels. While loop-current fluctuations confined to vanadium orbitals favor chiral d et id superconductivity\, which spontaneously breaks time-reversal symmetry\, the inclusion of antimony orbitals stabilizes an s± state that is robust against disorder. We argue that these two states are realized experimentally as pressure increases and the antimony-dominated Fermi surface sheet undergoes a Lifshitz transition. \n_ \nContact : julia.meyer@univ-grenoble-alpes.fr  \nLe séminaire théorie est financé par la fédération de recherche Quantalps.
URL:https://sfp-alpes.fr/event/joerg-schmalian/
LOCATION:CEA\, Salle de Conférence à l’Entrée Principale\, 17\, avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261002T140000
DTEND;TZID=Europe/Paris:20261002T160000
DTSTAMP:20260924T081457Z
CREATED:20260918T130058Z
LAST-MODIFIED:20260924T081457Z
UID:10000264-1790949600-1790956800@sfp-alpes.fr
SUMMARY:Soutenance de thèse par Romy MORIN (CEA-Irig/Pheliqs)
DESCRIPTION:Dynamique des quasiparticules dans les supraconducteurs désordonnés avec couplage spin-orbite\nRésumé : \nLa supraconductivité est un état de la matière dans lequel les électrons forment un condensat de paires de Cooper de spins opposés. Par excitation d’énergie supérieure à deux fois le gap supraconducteur\, ces paires peuvent être brisées en deux quasiparticules indépendantes. À l’équilibre thermique\, la théorie BCS prédit une concentration de quasiparticules exponentiellement faible\, quasiment nulle à l’échelle du millikelvin. De nombreuses expériences ont cependant mis en évidence un excès significatif de quasiparticules\, dégradant les dispositifs supraconducteurs en réduisant les temps de cohérence des qubits et les facteurs de qualité des résonateurs. Cet excès\, provenant de multiples sources environnementales (photons IR\, phonons\, muons…)\, est difficile à éliminer. Comprendre la dynamique des quasiparticules devient essentiel pour prévenir leur « empoisonnement » des dispositifs quantiques. Dans les supraconducteurs désordonnés\, les fluctuations spatiales du gap peuvent piéger les quasiparticules\, modifiant ainsi leur spectre et entravant leur recombinaison en paires de Cooper. Cette thèse vise à mieux comprendre la recombinaison des quasiparticules dans les supraconducteurs désordonnés\, en étudiant (i) le spectre des états liés d’une déplétion locale du gap\, et (ii) les taux de relaxation de spin inélastiques\, nécessaires à la recombinaison. Dans un premier projet\, nous présentons un modèle minimal d’une déplétion locale du gap dans un supraconducteur propre. Une approche semiclassique révèle l’existence de multiples états liés dont le nombre dépend de la taille et de la profondeur de la variation du gap. En dimensions supérieures à un\, ce nombre devient très élevé pour un piège de taille typique de l’ordre de la longueur de cohérence. Une description complète via les équations de Bogoliubov-de Gennes montre qu’en dimension deux et trois\, un nombre infini d’états liés supplémentaires s’accumule près du bord du gap\, même pour des pièges arbitrairement petits. Les fonctions d’onde associées sont maximales à l’extérieur du piège et décroissent exponentiellement sur des longueurs caractéristiques très grandes. Ce modèle offre un cadre unifié décrivant les états liés sur toute une gamme de taille de pièges\, avec des implications directes pour les processus de recombinaison. Dans un second projet\, nous investiguons la recombinaison des quasiparticules en paires de Cooper singulet. Un unique piège abrite un grand nombre d’états liés\, de fait\, les quasiparticules piégées de spin opposé sont amenées à se recombiner rapidement. Progressivement le système est conduit vers une configuration où il ne reste que des quasiparticules de même spin. Le spin-flip devient alors un canal de recombinaison indispensable à étudier. Une analyse complète nécessite de combiner trois mécanismes: (i) l’interaction électron-phonon (relaxation d’énergie)\, (ii) le couplage spin-orbite faible (relaxation de spin)\, et (iii) le désordre inhérent aux matériaux réels. Une telle combinaison n’ayant jamais été pleinement établie\, même dans l’état métallique\, nous étudions la relaxation inélastique de spin via la règle d’or de Fermi comme première étape vers la recombinaison dans les supraconducteurs. Premièrement\, nous retrouvons le taux de relaxation inélastique en régime diffusif\, variant quartiquement en énergie car supprimé par le désordre\, comme prédit par Schmid. Puis\, nous calculons le taux de spin-flip élastique dans un métal désordonné\, proportionnel au taux de relaxation sans spin-flip. Enfin\, nous dérivons le taux de spin-flip inélastique dans un métal propre\, présentant une dépendance en puissance cinq de l’énergie. Ces deux taux présentent un préfacteur quartique en couplage spin-orbite\, suggérant que la relaxation de spin constituerait le facteur limitant de la recombinaison. L’extension au cas inélastique désordonné ainsi que la généralisation au cas supraconducteur sont esquissées\, ouvrant la voie à un calcul complet du taux de recombinaison.​ \n_ \nATTENTION ! L’accès du site CEA nécessite une autorisation d’accès préalable. Merci de contacter à l’avance l’organisateur : Julia Meyer \n 
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-romy-morin-cea-irig-pheliqs/
LOCATION:CEA – Salle de Séminaire IRIG (1005 – 445)\, 17\, avenue des Martyrs\, Grenoble\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261006T140000
DTEND;TZID=Europe/Paris:20261006T150000
DTSTAMP:20260928T082945Z
CREATED:20260925T151755Z
LAST-MODIFIED:20260928T082945Z
UID:10000268-1791295200-1791298800@sfp-alpes.fr
SUMMARY:Chika OTANI (Tokyo University\, Japan​)
DESCRIPTION:Exploring Quantum Spintronics -Research and Internship Opportunities in Japan\nRésumé : \n\n\nWould you like to experience research in Japan and become part of an international collaboration in spintronics? \nIn this seminar\, I will introduce the Japan–France ASPIRE Q-Spintronics Project\, an international program that brings together researchers and students from leading laboratories in Japan and France. Our goal is not only to explore new frontiers of spintronics\, but also to create opportunities for young researchers to cross borders\, learn new experimental techniques\, and develop their own international research networks. \nI will first give an accessible introduction to some of the science we are exploring—from spin and orbital angular momentum transport to interactions between magnons and phonons. These rapidly developing areas raise fundamental questions about how angular momentum and information can be generated\, transported\, and controlled in nanoscale materials and devices.\n\nI will then introduce the participating Japanese laboratories at Tohoku University\, the University of Tokyo\, Osaka University\, and JAEA\, highlighting the different research environments and experimental techniques available at each location. Students may have opportunities to participate in nanofabrication\, electrical transport\, magneto-optical measurements\, synchrotron experiments\, high-frequency measurements\, and studies of magnetization dynamics. \n\nFinally\, I will explain how Master’s and PhD students\, as well as young researchers\, can visit Japan for internships or research stays through the ASPIRE collaboration\, including possible research topics and financial support. Whether you already work in spintronics or are simply curious about doing research in Japan\, this seminar will provide an introduction to the scientific and international opportunities offered by Q-Spintronics.​\n​\n_\n\n\n\n\n\nATTENTION ! L’accès au CEA est réservé aux porteurs de laissez-passerP​resential access to the conference room at CEA in Grenoble requires an entry authorization.\nPlease\, request it before September 28th at admin.spintec@cea.fr\n\n\n\n\n​​Video conference : link
URL:https://sfp-alpes.fr/event/chika-otani-tokyo-university-japan/
LOCATION:CEA – Salle de Séminaire IRIG (1005 – 445)\, 17\, avenue des Martyrs\, Grenoble\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261008T160000
DTEND;TZID=Europe/Paris:20261008T170000
DTSTAMP:20260409T110853Z
CREATED:20260409T110848Z
LAST-MODIFIED:20260409T110853Z
UID:10000124-1791475200-1791478800@sfp-alpes.fr
SUMMARY:Cecile ENGRAND
DESCRIPTION:Les micrométéorites : les messagères de notre origine\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13491/ \nContact : louis.fayard@IJCLAB.INP3.FR \n  \n 
URL:https://sfp-alpes.fr/event/cecile-engrand/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261009T100000
DTEND;TZID=Europe/Paris:20261009T120000
DTSTAMP:20260917T145411Z
CREATED:20260917T145411Z
LAST-MODIFIED:20260917T145411Z
UID:10000257-1791540000-1791547200@sfp-alpes.fr
SUMMARY:Soutenance de Thèse par Corentin GUERIN (CEA-Irig/Pheliqs)
DESCRIPTION:Réalisation d’hétérostructures III-Nitrures pour l’émission UV profond : du matériau au dispositif\nRésumé : \nNous explorons ici plusieurs sujets connexes autour de l’émission dans la gamme UV-C pour des applications dans le domaine de la désinfection. Dans un premier temps\, nous étudions la croissance de l’AlN en structure nanofil par reprise d’épitaxie réalisée par une technique d’épitaxie par jets moléculaires (EJM) sur des nano-piliers de GaN. Nous étudions les conditions optimales de croissance EJM puis établissons un mode de croissance optimisé pour nos nanofils d’AlN utilisant une méthode de croissance alternée (Migration Enhanced Epitaxy). Suite à l’observation de défauts d’empilements étendus dans le plan basal des sections d’AlN\, assimilables à des inclusions cubiques le long de la matrice wurtzite\, nous identifions le caractère luminescent de ces défauts à basse température et établissons un modèle prédictif liant le nombre de plans de la faute d’empilement à son énergie d’émission. Dans un troisième temps\, nous étudions les propriétés de luminescence en température et résolues en temps d’un puits quantique GaN/AlN ultra-fin\, d’épaisseur graduée inférieure à une monocouche\, qui émet dans l’UV-C profond entre 240 nm et 220 nm. Etablissant les propriétés de la structure en luminescence résolue en temps\, nous établissons un modèle basé sur la fuite thermoionique de l’électron dans la barrière AlN\, permettant d’expliquer la chute de rendement quantique externe observée dans les émetteurs UV-C profonds. En outre\, nous détaillons la réalisation d’une Diode Électroluminescente réalisée par EJM et la réalisation du contact p. Nous démontrons une émission à 260 nm en électroluminescence\, pour un très faible EQE de 5.10−3%. Enfin\, nous proposons une méthode de mesure du rendement radiatif par excitation électronique\, basée sur l’utilisation d’une sphère intégrante à l’intérieur d’un microscope électronique.​ \n 
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-corentin-guerin-cea-irig-pheliqs/
LOCATION:CNRS – Salle Nevill Mott (D420)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261012T100000
DTEND;TZID=Europe/Paris:20261015T130000
DTSTAMP:20260626T084843Z
CREATED:20260625T151925Z
LAST-MODIFIED:20260626T084843Z
UID:10000209-1791799200-1792069200@sfp-alpes.fr
SUMMARY:OLIMPICS 2026 : Physics and living systems
DESCRIPTION:We are pleased to announce the 2026 conference « Physics and living systems » of the OLIMPICS federation (CNRS\, UGA\, G-INP\, CEA). It will take place in the Bauges Massif (Lescheraines)\, from Monday\, October 12 at 10:00 am to Thursday\, October 15 at 1:00 pm. \nRegistrations and abstract submissions will be open from now until July 31th. \nThis event is intended to give early-career scientists the opportunity to present their work and build their network. Therefore\, we strongly encourage the participation of PhD students and PostDocs. Scientific talks will be complemented by off-topic talks\, free time for discussions and poster sessions. \nA shuttle service will be operated from Grenoble and Chambéry train stations to/from the conference venue at the beginning and end of the conference. \n  \nWe will have the pleasure of welcoming four guest speakers on each of the four major themes that make up our community : \n– Stéphanie Descroix (DR CNRS\, Institut Curie\, Paris) – Theme : Investigating the living world \n– Yanxia Hou-Broutin (DR CNRS\, SyMMES\, Grenoble) – Theme : Bio-inspired physics and engineering \n– Guillaume Salbreux (Prof. Université de Genève\, Department of Genetics and Evolution) Theme : Dynamics of living systems \n– Julien Gautrot (Prof. Univ. London\, Centre for Molecular Biochemical Engineering) Theme: Physical interactions \n  \nMore information on the conference venue\, registration\, access map\, registration fees\, and other practical information is available on our website : https://olimpics2026.sciencesconf.org \n_ \nContact : olimpics2026@sciencesconf.org
URL:https://sfp-alpes.fr/event/olimpics-2026-physics-and-living-systems/
LOCATION:L’Eau Vive – Géopark des Bauges\, Base de Loisirs de Lescheraines\, Lescheraines\, 73340\, France
CATEGORIES:Conférence,Evènements
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T150000
DTSTAMP:20260918T144108Z
CREATED:20260918T143923Z
LAST-MODIFIED:20260918T144108Z
UID:10000265-1791900000-1791903600@sfp-alpes.fr
SUMMARY:Chung-Hou CHUNG (1 Department of Electrophysics\, National Yang Ming Chiao Tung University\, Hsinchu\, Taiwan -  2 Physics Division\, National center for Theoretical Sciences\, Taipei\,Taiwan)
DESCRIPTION:A theory for quantum-critical Planckian strange metal phase in high-Tc cuprate superconductors\nRésumé : \nThe strange metallic state showing incoherent charge transport with universal linear-in-temperature scattering rate: 1/τ = αP kB T / ħ with αP ~ 1 and logarithmic-in-temperature singular specific heat coefficient\, so-called “Planckian metal”\, has been observed in various high-Tc cuprate superconductors over a finite range in doping near optimal doping [1]. Understanding this state is believed to be the key to revealing the mechanism for high-Tc superconductivity. Here\, we propose a generic microscopic mechanism for this state based on quantum-critical local bosonic charge Kondo fluctuations coupled to both spinon and a heavy conduction-electron Fermi surfaces within the heavy-fermion formulated slave-boson t-J model [2]. Our theory is motivated by the striking similarity in strange metal phenomenology between cuprates and heavy-fermion Kondo lattice systems [3]. By a controlled perturbative renormalization group analysis of our effective heavy-fermion model\, we examine the competition between the pseudogap phase\, characterized by Anderson’s Resonating-Valence-Bond spin-liquid made of fermionic spin-singlet spinons\, and the Fermi-liquid state modeled by coherent electron hopping (charge Kondo hybridization). We find an extended quantum-critical metallic phase with a universal Planckian ħω/kBT scaling in scattering rate near a localized-delocalized (pseudogap-to-Fermi liquid) charge-Kondo breakdown transition of the model. The d-wave superconducting ground state emerges near the transition. Unprecedented qualitative and quantitative agreements are reached between our theoretical predictions and various experiments\, including ħω/kBT scaling in optical conductivity [4]\, universal doping-insensitive field-to-temperature (B/T-) scaling in magnetoresistance [5]\, singular specific heat coefficient [6]\, marginal Fermi-liquid spectral function observed in ARPES [7]\, and Fermi surface reconstruction observed in Hall coefficients in various overdoped cuprates [5\,8]. We further applied this framework to obtain a universal quantum-critical B/T-scaling in magneto-transport and unify the B-linear and T-linear Planckian scattering rate observed in LSCO over an extended doping range\, pointing toward a unified quantum–critical origin of Planckian transport in cuprates [9]. This universal Planckian metal phase can be realized within a solvable large-N multi-channel Kondo lattice model generalized from this heavy-fermion formulated tJ model [10]. Our mechanism offers a microscopic understanding of the quantum-critical Planckian metal phase observed in cuprates and its link to the pseudogap\, d-wave superconducting\, and Fermi liquid phases. It offers a promising route for understanding how d-wave superconductivity emerges from such a strange metal phase in cuprates–one of the long-standing open problems in condensed matter physics since 1990s. \nReferences  \n\nLegros et al.\, Nat. Phys. 15\, 142 (2019).\nA mechanism for quantum-critical Planckian metal phase in high-temperature cuprate superconductors\, YY Chang\, K Van Nguyen\, K Remund\, C.H. Chung*\, Reports on Progress in Physics\, 88\, 048001 (2025).\nThe scaled-invariant Planckian metal and quantum criticality in Ce1-xNdxCoIn5\, Yung-Yeh Chang\, Hechang Lei\, Cedomir Petrovic*\, Chung-Hou Chung*\, Nature Communications 14 (581) (2023); A mechanism for the strange metal phase in rare-earth intermetallic compounds”\, Jiangfan Wang\, Yung-Yeh Chang and Chung-Hou Chung*\, Proceedings of the National Academy of Sciences (PNAS)\, Volume 119(10) e2116980119 March 1\, 2022; Strange superconductivity near an antiferromagnetic heavy fermion quantum critical point\, Y. Y. Chang\, F. Hsu\, S. Kirchner\, C. Y. Mou\, T. K. Lee\, C. H. Chung*\, Phys. Rev. B 99\, 094513 (2019); Mechanism of a strange metal state near a heavy-fermion quantum critical point\, Yung-Yeh Chang\, Silke Paschen\, Chung-Hou Chung*\, Phys. Rev. B 97\, 035156 (2018).\nB. Michon et al.\, Nature Communications 14\, 3033 (2023).\nJ. Ayres et al.\, Nature 595\, 661 (2021).\nB. Michon et al.\, Nature 567\, 218 (2019).\nS.D. Chen et al.\, Science\, 366\, 1099 (2019).\nC. Proust et al.\, Annual Review of Condensed Matter Physics 10\, 409 (2019).\nUniversality of T –linear and B–linear Planckian scattering rate in high–Tc cuprate superconductors\, K. Remund\, K. V. Nguyen\, P.-H. Chou\, P. Giraldo-Gallo\, J. A. Galvis\, G. S. Boebinger\, and C.-H. Chung*\, arXiv:2602.10627.\nTheory of universal Planckian metal phase in t-J model: application for high-temperature cuprate superconductors\, YY Chang\, K Van Nguyen\, K Remund\, CH Chung*\, arXiv:2506.15552\n\n_ \nContact : david.leboeuf@lncmi.cnrs.fr
URL:https://sfp-alpes.fr/event/chung-hou-chung-1-department-of-electrophysics-national-yang-ming-chiao-tung-university-hsinchu-taiwan-2-physics-division-national-center-for-theoretical-sciences-taipeitaiwan/
LOCATION:CNRS – Salle René Pauthenet (J229)\, CNRS – LNCMI\, 25 avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T150000
DTSTAMP:20261002T092401Z
CREATED:20261002T092401Z
LAST-MODIFIED:20261002T092401Z
UID:10000284-1791900000-1791903600@sfp-alpes.fr
SUMMARY:Maria del Mar RODRIGUEZ ROBLES
DESCRIPTION:Transparent electrodes based on silver nanowire networks protected by nitrides\nRésumé : \nSilver nanowire (AgNW) networks are promising alternatives to indium tin oxide (ITO) for transparent electrodes\, combining excellent optoelectronic performance\, mechanical flexibility\, and compatibility with scalable fabrication processes1. However\, their practical implementation is hindered by poor adhesion to substrates and degradation under thermal\, electrical\, mechanical\, and environmental stresses. These limitations are related to the high surface-to-volume ratio of AgNWs\, which promotes chemical reactivity\, surface diffusion\, and morphological instability2. \nThis thesis explores transition metal nitrides as protective coatings for AgNW networks3\, with the aim of improving their adhesion and long-term stability while preserving their optical and electrical performance. Nitrides such as TiN and AlN are particularly attractive because of their high hardness\, chemical inertness\, and thermal and mechanical stability. Despite these properties\, their use for protecting metallic nanowire networks remains largely unexplored. \nDifferent deposition strategies\, including Physical Vapor Deposition (PVD)\, Plasma-Enhanced Atomic Layer Deposition (PE-ALD)\, and Area-Selective Deposition using PE-ALD (ASD-PEALD)\, are investigated to develop controlled nitride coatings on AgNW networks. The thesis examines how the coating characteristics influence the structural\, optical\, and electrical properties of the electrodes\, as well as their stability under electrical\, thermal\, mechanical\, and environmental stresses. \nOverall\, this work aims to establish the potential of nitride-based protective strategies for overcoming the stability and adhesion limitations of AgNW transparent electrodes. The results provide new insights into the relationship between protective coating design\, nanowire stability\, and electrode performance\, contributing to the development of more durable and reliable transparent electrodes. \n1          S. Maurya\, L. Labeyrie\, K. Zimny\, M. D. M. Rodriguez-Robles\, B. Zheng\, S. Schumacher\, D. Muñoz-Rojas\, D. Bellet and M. Tréguer-Delapierre\, Advances in Physics: X\, 2025\, 10\, 2573818. \n2          L. Bardet\, D. T. Papanastasiou\, C. Crivello\, M. Akbari\, J. Resende\, A. Sekkat\, C. Sanchez-Velasquez\, L. Rapenne\, C. Jiménez\, D. Muñoz-Rojas\, A. Denneulin and D. Bellet\, Nanomaterials\, 2021\, 11\, 2785. \n3          D. T. Papanastasiou\, A. Mantoux\, A. Crisci\, H. Ribeiro\, A. Sekkat\, H. Roussel\, M. Weber\, L. Rapenne\, C. Jiménez\, M. Fivel\, D. Bellet\, E. Blanquet and D. Muñoz-Rojas\, ACS Appl. Nano Mater.\, 2024\, 7\, 12312–12322. \nShort Bio/CV \nI am a third-year PhD student at the LMGP and SIMaP labs with a background in nanoscience. As part of the ANR LES MENINES project\, my research focuses on the development of protective coatings for metallic nanowires for transparent electrodes applications via physical vapor and atomic layer deposition techniques\, with a special interest in nitrides and oxide coatings.  \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/maria-del-mar-rodriguez-robles/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T150000
DTSTAMP:20261009T091812Z
CREATED:20261009T091812Z
LAST-MODIFIED:20261009T091812Z
UID:10000297-1791900000-1791903600@sfp-alpes.fr
SUMMARY:Landry BRETHEAU (PMC\, Ecole Polytechnique\, CNRS\, IPP\, Palaiseau\, France)
DESCRIPTION:Nonlocal Josephson effect in an Andreev molecule\nRésumé : \nHybrid Josephson junctions – in which quantum conductors are used as weak links – offer a rich playground for novel quantum phenomena. They host localized fermionic states knowns as the Andreev bound states (ABS)\, which mediate the Josephson effect and carry the resulting supercurrent. When two such junctions are placed in close vicinity\, the ABS wavefunctions hybridize\, forming an Andreev molecule. In this regime\, the Josephson effect becomes nonlocal: the supercurrent flowing through one junction depends directly on the superconducting phase applied across the other. In this seminar\, I will present our recent experimental realization 1 of an Andreev molecule built on ultraclean carbon nanotubes\, which constitute elementary one-dimensional weak links. Using this platform\, we observed a pronounced nonlocal Josephson response and demonstrated that it stems from the formation of delocalized Andreev molecular states extending across both junctions. Furthermore\, we show that ground-state parity transitions induce characteristic π-phase shifts in the nonlocal response. Our findings demonstrate that the nonlocal Josephson effect offers a direct access into both the spatial structure and the global fermion parity of delocalized superconducting states. \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/landry-bretheau-pmc-ecole-polytechnique-cnrs-ipp-palaiseau-france/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T160000
DTSTAMP:20260925T153332Z
CREATED:20260925T153332Z
LAST-MODIFIED:20260925T153332Z
UID:10000270-1791900000-1791907200@sfp-alpes.fr
SUMMARY:Soutenance de Thèse par Maria VAL PEVIDA (CEA-Irig/IBS)
DESCRIPTION:Structural study of NADPH oxidase complex NOX1 by cryo-electron microscopy\nRésumé : \nMembrane proteins (MPs) constitute a major class of pharmaceutical targets due to their central roles in essential physiological processes. Among them\, NADPH oxidases (NOX) comprise a family of transmembrane enzymes involved in numerous crucial cellular functions — including host defence\, hormone synthesis\, vascular tone regulation\, and equilibrium — through the regulated production of reactive oxygen species (ROS). NOX1\, one of the human NOX isoforms\, is predominantly expressed in the intestinal epithelium\, where it forms a heterodimeric complex with p22phox in the membrane. Dysregulation of NOX1 activity\, often arising from genetic mutations\, has been associated with early-onset colorectal cancer and inflammatory bowel disease (IBD). Elucidating the three-dimensional structures of MPs and their mechanistic properties is essential to accelerate structure-based drug design strategies. Cryo-electron microscopy (cryo-EM) has become a powerful technique for resolving MPs structures at atomic resolutions. However\, structural determination of small MPs (<100 kDa) remains challenging due to their low expression levels\, low signal-to-noise ratios\, dependence on detergent solubilisation\, and intrinsic conformational flexibility\, all which complicating particle alignment and high-resolution structure reconstruction. To overcome these limitations\, antigen-binding fragments (Fabs) are frequently employed as fiducials to increase particle size and stabilise specific conformations by binding to defined epitopes. \nIn this thesis\, a lentiviral-based expression system was developed for the overexpression of the NOX1/p22phox complex in HEK293 T-Rex cells. Initial attempts to determine the structure of wild-type NOX1 were unsuccessful due to low production yield and the small size of the complex\, compounded by the lack of a commercially available monoclonal antibody targeting NOX1. To overcome these limitations\, co-expression with the EROS chaperone\, combined with the engineering of a NOX1 mutant\, named NOX12\, enabled improved production. This mutant incorporates modifications in extracellular loops to allow specific recognition by the anti-NOX2 Fab7D5. This strategy increased particle size\, allowing particle alignment and facilitating structural determination of the complex by cryo-EM. High-resolution structure of the core of NOX12 in complex with p22phox and Fab7D5 was determined at an overall resolution of 2.8 Å. In addition\, the structure of the NOX12/p22phox in complex with EROS and Fab7D5 was resolved at an overall resolution of 3.2 Å. This structure revealed a previously uncharacterised interaction mode between EROS and the catalytic subunit. Furthermore\, the structural framework enabled analysis of disease-associated mutations in NOX1 and provided insights into oxygen access pathways. \nThis work provides the first structural insights into NOX1 isoform in complex with its partner p22phox and together with the EROS chaperone\, establishing a framework for understanding its stabilisation and maturation. In addition\, the successful implementation of protein epitope engineering highlights a broadly applicable strategy for studying other NOX isoforms that lack specific antibodies\, in both resting and activated states\, thereby enabling cryo-EM characterisation across this family of MPs. Further studies will be required to elucidate the detailed molecular mechanisms underlying NOX1 activation. ​​​​ \n_ \n\n\nLes séminaires et soutenances sont ouverts à tous\, notez toutefois que l’accès au campus EPN nécessite un avis de rendez-vous. Merci de remplir ce formulaire  et de l’adresser\, plus de 48h à l’avance\, à ce contact.\nPensez à vous munir d’une pièce d’identité le jour de votre visite.
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-maria-val-pevida-cea-irig-ibs/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T160000
DTSTAMP:20261008T150927Z
CREATED:20261008T150927Z
LAST-MODIFIED:20261008T150927Z
UID:10000294-1791900000-1791907200@sfp-alpes.fr
SUMMARY:Soutenance de Thèse par Thomas VASSELON
DESCRIPTION:Dynamics of ultrashort plasmonic excitations in nanoelectronic quantum circuits\nLa soutenance  se déroulera en anglais. \nRésumé : \nLes technologies quantiques nécessitent des plateformes physiques capables de transporter et de manipuler l’information quantique tout en préservant sa cohérence. Une alternative aux plateformes photoniques consiste à utiliser des électrons se propageant dans des nanostructures semi-conductrices\, donnant naissance au domaine de l’optique quantique électronique. Une manière de générer des excitations électroniques individuelles consiste à appliquer des impulsions de tension ultracourtes à une mer de Fermi\, générant des paquets d’ondes électroniques ou des excitations plasmoniques. Des travaux récents ont démontré des phénomènes d’interférence avec des paquets d’ondes électroniques individuels de 27 ps dans un interféromètre électronique de Mach–Zehnder. Cependant\, l’étendue spatiale de l’excitation restait comparable à la taille du dispositif. \nL’objectif de cette thèse est de générer des paquets d’ondes électroniques plus courts que la longueur caractéristique des circuits nanoélectroniques\, afin d’atteindre un régime dans lequel de nouveaux phénomènes d’interférence quantique induits par la charge sont attendus. Ces phénomènes hors équilibre\, connus sous le nom d’oscillations de charge dynamiques\, résultent d’une phase imprimée sur la mer de Fermi par les paquets d’ondes électroniques. Cette phase peut être sondée au moyen d’interféromètres électroniques en mesurant le courant en fonction de la charge injectée. \nDeux approches complémentaires sont étudiées pour accéder à ce régime. La première repose sur un interféromètre à base de boîte quantique fonctionnant avec une électronique conventionnelle dans le domaine des GHz\, où les premières signatures des oscillations de charge dynamiques sont observées. La seconde consiste à développer une nanoélectronique THz permettant de générer des impulsions de tension aussi courtes que 1 ps. Nous démontrons le contrôle actif de plasmons THz dans un guide d’onde électronique unidimensionnel. Ces travaux ouvrent la voie à l’observation des oscillations de charge dynamiques dans des dispositifs plus génériques\, tels que des interféromètres de Fabry–Pérot ou de Mach–Zehnder. \nCette thèse démontre une dynamique ultrarapide dans des circuits nanoélectroniques\, permettant d’atteindre de nouvelles frontières pour les circuits quantiques fonctionnant à des vitesses sans précédent. \n__________________________________________________________________________________________________________________________________ \nAbstract : \nQuantum technologies require physical platforms capable of transporting and manipulating quantum information while preserving coherence. An alternative to photonic platforms is to use electrons propagating through semiconductor nanostructures\, giving rise to the field of electron quantum optics. One way to generate single-electron excitations is to apply ultrashort voltage pulses to a Fermi sea\, generating electronic wavepackets or plasmonic excitations. Recent results demonstrated interferometry with 27-ps-long single-electron wavepackets in an electronic Mach-Zehnder. However\, the spatial extent of the excitation was comparable to the size of the device. \nThe aim of this thesis is to generate electronic wavepackets shorter than the characteristic length of nanoelectronic circuits\, reaching a regime where new charge-induced quantum interference is expected to arise. These out-of-equilibrium phenomena\, known as dynamical charge oscillations\, emerge from a phase imprinted onto the Fermi sea by the electronic wavepackets. This phase can be probed through electronic interferometers by measuring the current as a function of the injected charge. \nTwo complementary approaches are investigated to access this regime. The first relies on a quantum-dot-based interferometer operating with conventional GHz electronics\, where first signatures of dynamical charge oscillations are observed. The second consists of developing THz nanoelectronics to generate voltage pulses as short as 1 ps. We demonstrate active control of THz plasmons in a one-dimensional electronic waveguide. This opens a route towards observing dynamical charge oscillations in more generic devices\, such as Fabry–Pérot or Mach–Zehnder interferometers. \nThis thesis demonstrates ultrafast dynamics in nanoelectronic circuits\, reaching new frontiers for quantum circuits operating at unprecedented speeds. \n_ \nContact : christopher.bauerle@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-thomas-vasselon/
LOCATION:CNRS – Bâtiment A\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38054\, France
CATEGORIES:Soutenance,Soutenance de Thèse
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261014T140000
DTEND;TZID=Europe/Paris:20261014T150000
DTSTAMP:20261009T130453Z
CREATED:20261009T130453Z
LAST-MODIFIED:20261009T130453Z
UID:10000301-1791986400-1791990000@sfp-alpes.fr
SUMMARY:Liuba GOSTEVA (LPMMC)
DESCRIPTION:Scaling regimes of the 1D Kuramoto-Sivashinsky equation\nRésumé : \nThe Kuramoto-Sivashinsky (KS) equation describes various phenomena exhibiting chaos and instabilities\, including flames\, reaction-diffusion processes\, and thin liquid film flows. It resembles the Kardar-Parisi-Zhang (KPZ) equation\, with the key difference being the negative « viscosity » in the KS equation. The KS equation is known to belong to the KPZ universality class: at large scales\, its statistical properties are governed by the KPZ fixed point\, characterized by the dynamical exponent $z=3/2$ and a known PDF of fluctuations. In this talk\, I will analyze the stochastic KS equation using the functional renormalization group (FRG). In this framework\, attractive fixed points of the FRG equation determine large-scale universal behavior\, while unstable fixed points govern small-scale universal behavior. I will show that the two-point correlation function exhibits\, besides the KPZ scaling at large scale\, another universal scaling regime at small scale\, with $z=1$. This scaling is very robust as it is intrinsic to the KS dynamics. It arises from the vanishing of the effective viscosity when evolving from its microscopic negative KS value\, to its macroscopic effective positive KPZ value. I will also present results from direct numerical simulations\, which confirm these findings. The talk is based on the following articles: 1 L. Gosteva\, D. Roy\, N. Wschebor\, and L. Canet\, arXiv:2605.23364 (2026). 2 L. Gosteva\, N. Wschebor\, and L. Canet\, arXiv:2607.15784 (2026). \n_ \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/liuba-gosteva-lpmmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261015T130000
DTEND;TZID=Europe/Paris:20261015T150000
DTSTAMP:20261011T173818Z
CREATED:20260925T154138Z
LAST-MODIFIED:20261011T173818Z
UID:10000272-1792069200-1792076400@sfp-alpes.fr
SUMMARY:ATTENTION !!! Changement de lieu !!! Soutenance de Thèse par Mohamad WAHIDI (CEA-Irig/LPCV)
DESCRIPTION:Mécanismes régulateurs à l’échelle du génome impliqués dans l’intégration des signaux lumineux et du CO₂ chez Chlamydomonas reinhardtii\nRésumé : \nLes microalgues sont des algues unicellulaires microscopiques que l’on trouve généralement dans les systèmes d’eau douce et marins et qui peuvent vivre à la fois dans les colonnes d’eau et sur le sol. Ces organismes ont développé la capacité de répondre à des stimuli externes potentiellement mortels\, tels qu’une faible disponibilité environnementale de CO2\, au cours desquels ils activent un mécanisme appelé mécanisme de concentration de CO2 (CCM)\, pour augmenter les niveaux de fixation interne du CO2 dans le pyrénoïde de leurs chloroplastes. Ils ont également développé des propriétés photoprotectrices pour pouvoir se protéger des stimuli lumineux excessifs qui pourraient entraîner un stress oxydatif au niveau cellulaire en dissipant les excès. l’énergie lumineuse en chaleur. D’autre part\, les signaux lumineux provenant de l’environnement externe jouent également un rôle crucial dans la photosynthèse et ses mécanismes associés tels que le CCM et la photoprotection susmentionnés. Lorsque nous pensons au processus de photosynthèse et au CO2\, nous pensons principalement au fait que ce dernier est un substrat nécessaire au processus. Cependant\, le CO2 a également un rôle de signalisation et contrôle l’activation transcriptionnelle de la photoprotection et du CCM même en l’absence de lumière. Les mécanismes de contrôle du CO2 sont mal compris car peu étudiés. Dans ce projet\, j’étudie le rôle de signalisation du CO2 et comment il s’intègre aux signaux lumineux au niveau moléculaire chez Chlamydomonas reinhardtii. Je m’intéresse à élucider les mécanismes par lesquels le CO2 et la lumière convergent pour contrôler la photoprotection et le CCM mais aussi l’expression des gènes à l’échelle du génome. Je me concentre dans un premier temps sur le facteur nucléaire CIA5 qui agit à la croisée du CO2 et de la signalisation lumineuse. CIA5\, également connu sous le nom de CCM1\, a été initialement découvert comme régulateur principal des gènes CCM. Les travaux de notre laboratoire ont montré que CIA5 est également un régulateur clé de l’expression des gènes liés à la photoprotection. Au début de cette thèse\, j’ai mis en place des expériences pour commencer à répondre aux questions suivantes : L’expression de quels gènes\, à l’échelle du génome\, est contrôlée/affectée par le CO2 ? Quels gènes sont contrôlés uniquement par le signal lumineux ? Et quels gènes nécessitent que la lumière et le CO2 soient régulés ? Des expériences de séquençage d’ARN ont été réalisées où les algues ont été soumises à différents niveaux de CO2 et disponibilités de lumière. Les données sont analysées avec la direction et l’aide de notre collaborateur\, le Dr Zoran Nikoloski de l’Université de Potsdam. L’objectif est de créer un réseau de régulation génétique (GRN) à partir des résultats du séquençage afin de proposer des gènes candidats contrôlés par le CO2\, la lumière ou les deux. Certains des candidats seront testés en laboratoire tout au long de cette thèse en commandant des souches déficientes en gènes candidats spécifiques respectifs de la bibliothèque Chlamydomonas (bibliothèque CLiP). Les travaux de cette thèse peuvent contribuer à élargir la liste des découvertes qui élucident les rôles de signalisation réels du CO2 et de la lumière chez Chlamydomonas reinhardtii au niveau moléculaire. Cela peut profiter à la recherche menée sur d’autres sujets tels que le changement climatique et l’avenir des cultures et de la production alimentaire et du développement.​ \n_ \n\n\nATTENTION ! L’entrée d​u site CEA-Grenoble nécessite une autorisation préalable et sur présentation de votre pièce d’identité le jour de votre venue (CI ou passeport\, car le permis de conduire n’est pas recevable). Veuillez nous contacter par mail​​ \n\n\n\n\nNote: Entry to the CEA-Grenoble site requires prior authorization and the presentation of your ID on the day of your visit (ID card or passport; driver’s licenses are not accepted). Please request this authorization by​ e-mail​
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-mohamad-wahidi-cea-irig-lpcv/
LOCATION:Maison Minatec – salle Chrome 1\, 3\, parvis Louis Néel\, Grenoble\, 38000\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261015T140000
DTEND;TZID=Europe/Paris:20261015T150000
DTSTAMP:20260925T093019Z
CREATED:20260925T093019Z
LAST-MODIFIED:20260925T093019Z
UID:10000266-1792072800-1792076400@sfp-alpes.fr
SUMMARY:Francesca CHIODI (C2N\, Université Paris-Saclay)
DESCRIPTION:Superconducting Epitaxial Silicon – when you turn on the light\nRésumé : \nSince the discovery of BCS superconductivity in silicon by nanosecond laser ultra-doping with boron\, theoretical and experimental works have endeavored to understand what triggers and controls the superconducting phase. Indeed\, superconducting Si has great potential to develop a cryogenic electronics with the advantages of large scale integration and high reproducibility. Through the optimization of the nanosecond laser temporal profile\, we achieved an excellent control of both the electrical and structural properties of ultra-doped Si thin layers\, with state of the art maximum carrier concentration (8 at.%) in monocrystalline epilayers with few defects\, 100% dopant activation up to and above the solubility limit\, and a vertically homogeneous doping profile [1-3]. The control and improvement of the active doping is directly reflected in the control of the superconducting critical temperature Tc\, increased by 30% up to 0.9 K in this optimized setup\, and whose dependence with doping can now be modelled within BCS frame [3]. Furthermore\, we demonstrated that superconductivity is not only controlled by doping\, but also by the lattice deformation. Thus\, it is possible to tune up to 50% Tc by modifying by 1% the lattice parameter\, as shown through nanosecond laser incorporation of Ge up to 20 at.% [4]. \nThe sensitivity of superconducting silicon allows for multiple modulation ‘knobs’: for instance Tc can be tuned by doping\, allowing for the design of superconducting\, metallic or semiconducting regions in a device\, or by strain relaxation\, e.g. through localized Ge ion implantation. In addition\, the thin superconducting silicon layer can be affected by the absorption of photons either in the superconductor itself\, or in the undoped silicon underneath. The effect of light irradiation was highlighted in superconducting coplanar waveguide resonators\, whose resistivity easily matches the vacuum impedance. Due to the large disorder\, a high kinetic inductance characterizes the resonators [5]. The quasiparticle dynamics was measured when submitting the resonators to either a light or a microwave pulse\, these out-of-equilibrium measurements being also compared with the equilibrium generation-recombination noise spectral density. In addition\, work is in progress to assess the effect of visible photons on the DC response of the superconducting silicon micrometer-size lines\, where a single-photon counting mode with extremely low Dark Count Rates has been highlighted\, and whose detection mechanism is currently investigated. \n1. L. Desvignes\, et al.\, arXiv:2603.06383 (2026) ; PhD thesis\, Université Paris Saclay (2023) \n2. G. Hallais\, et al.\, Semicond. Sci.Tech. 38\, 034003 (2023) \n4. S. Nath\, et al.\, Phys. Status Solidi A\, 221: 2400313 (2024) \n5. P. Bonnet\, et al.\, Phys. Rev. Applied 17\, 034057 (2022) \n_ \nContact : florence.levy-bertrand@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/francesca-chiodi-c2n-universite-paris-saclay/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261015T160000
DTEND;TZID=Europe/Paris:20261015T170000
DTSTAMP:20260409T111459Z
CREATED:20260409T111456Z
LAST-MODIFIED:20260409T111459Z
UID:10000125-1792080000-1792083600@sfp-alpes.fr
SUMMARY:Christophe SALOMON
DESCRIPTION:Atomes froids et mesure précise du temps\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13426/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/christophe-salomon/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261016T110000
DTEND;TZID=Europe/Paris:20261016T120000
DTSTAMP:20261015T130316Z
CREATED:20261009T092313Z
LAST-MODIFIED:20261015T130316Z
UID:10000298-1792148400-1792152000@sfp-alpes.fr
SUMMARY:ATTENTION !!! SEMINAIRE ANNULE !!! Baptiste MARTIN (Eviden)
DESCRIPTION:Tensor Networks for quantum algorithms and quantum circuit simulations\nLe séminaire théorie est financé par la fédération de recherche Quantalps. \nRésumé : \nTensor networks (TNs) provide powerful tools for the classical simulation of quantum many-body systems\, while quantum computers offer a natural framework for generating and manipulating highly entangled states. With the recent advances in quantum hardware\, classical simulation has become increasingly important for understanding the capabilities of quantum devices and for developing more effective quantum algorithms. In this talk\, I will present two recent works. First\, I will discuss hybrid TN-quantum approaches and show how TN methods can improve quantum computing workflows\, enabling scalable variational ground-state preparation through warm-start circuit optimization and helping identify regimes where quantum computers may offer a computational advantage. Second\, I will focus on the classical simulation of quantum circuits and investigate alternative tensor network architectures. In particular\, I will show how Tree Tensor Networks (TTNs) can outperform standard Matrix Product States (MPS) when the network geometry more closely matches the entanglement structure generated by a quantum circuit. Together\, these results illustrate how tensor networks could both enhance near-term quantum computing and provide more efficient classical simulation strategies. \n_ \nContact : serge.florens@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/baptiste-martin-eviden/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261020T140000
DTEND;TZID=Europe/Paris:20261020T150000
DTSTAMP:20261009T091213Z
CREATED:20261009T090939Z
LAST-MODIFIED:20261009T091213Z
UID:10000296-1792504800-1792508400@sfp-alpes.fr
SUMMARY:James O'SULLIVAN (CEA Saclay\, Quantronics group)
DESCRIPTION:Coherent interaction between individual electron spins and superconducting circuits and dispersive spin detection\nRésumé : \nSpin defects in solids can be engineered as well-isolated two-level-systems with coherence that can exceed seconds\, but couple weakly to other quantum systems and to electromagnetic fields. In the lab\, exploring quantum optical effects in the microwave regime with spin defects requires an enhancement of the light-matter interaction; this may be achieved by coupling the spin to a low-impedance superconducting resonator. I will present two recent results involving resonator design and exploration of magnetic noise-insensitive spin defects. The first is a demonstration of the dispersive shift in frequency of a superconducting resonator conditioned on the state of a single electron spin. The second is a coherent interaction between a single magnetic-noise-insensitive electron spin transition and the field of a resonator in the so-called high cooperativity regime. \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/james-osullivan-cea-saclay-quantronics-group/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261021T110000
DTEND;TZID=Europe/Paris:20261021T120000
DTSTAMP:20261015T132750Z
CREATED:20261015T132750Z
LAST-MODIFIED:20261015T132750Z
UID:10000305-1792580400-1792584000@sfp-alpes.fr
SUMMARY:Vadim PLASTOVETS (University of Augsburg)
DESCRIPTION:Cavity-controlled superconductivity : interplay of matter and photonic fluctuations\nRésumé : \nConfining electromagnetic fields in a cavity reshapes the photonic environment of a superconductor\, providing a tunable control of its superfluid stiffness. We show that the sign of this effect depends qualitatively on the underlying superconducting regime. In conventional low-temperature BCS superconductors\, cavity-photon-mediated electron-electron interactions renormalize the kinetic mass of Cooper pairs\, leading to a reduction of effective superfluid density near critical temperature. In contrast\, in phase-fluctuating two-dimensional superconductors (such as underdoped cuprates)\, the cavity reshapes the collective plasma mode and can thereby suppress thermally excited phase fluctuations\, effectively enhancing the superfluid stiffness. These theoretical findings provide a possible explanation for recent experimental observations in niobium- and cuprate-based systems. \n_ \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/vadim-plastovets-university-of-augsburg/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261022T140000
DTEND;TZID=Europe/Paris:20261022T160000
DTSTAMP:20260925T154712Z
CREATED:20260925T154505Z
LAST-MODIFIED:20260925T154712Z
UID:10000273-1792677600-1792684800@sfp-alpes.fr
SUMMARY:Soutenance de Thèse par Lucie RIVET (CEA-Irig/SyMMES)
DESCRIPTION:Synthèse et caractérisation de polymères d’accepteurs non fullerène stables pour des cellules solaires « tout polymère »\nRésumé : \nAu cours des cinq dernières années\, les cellules solaires organiques (CSO) ont montré une forte progression de leurs performances dépassant 20% de rendement photovoltaïque en 2022. La formulation de ces deux matériaux sous forme d’encre imprimable rend possible l’industrialisation de ce procédé sur des substrats flexibles et par des techniques d’impression à haute vitesse. La bascule vers l’industrialisation à grande échelle est proche mais il reste à s’affranchir de plusieurs verrous technologiques importants. Parmi les approches permettant d’augmenter la stabilité des couches actives\, le remplacement des petites molécules acceptrices appelée accepteurs non fullerène par leurs dérivés polymères a récemment attiré notre attention. Ils présentent plusieurs avantages : une grande facilité de formulation sous forme d’encres solubles dans des solvants non halogénés\, une nano-morphologie robuste permettant une stabilité à long terme et l’accession a des couches plus épaisses grâce au mélange de deux polymères.​​​​​
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-lucie-rivet-cea-irig-symmes/
LOCATION:Basilique du Sacré Cœur – salle de conférence\, 4 rue Emile Gueymard\, Grenoble\, 38000\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="IRIG - CEA":MAILTO:irig.communication@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261023T093000
DTEND;TZID=Europe/Paris:20261023T113000
DTSTAMP:20261002T134425Z
CREATED:20261002T092006Z
LAST-MODIFIED:20261002T134425Z
UID:10000283-1792747800-1792755000@sfp-alpes.fr
SUMMARY:Soutenance de thèse par Tanisha BADHAURIA
DESCRIPTION:Étude des effets électromécaniques dans des nanofils semi-conducteurs piézoélectriques\nRésumé : \nZinc oxide (ZnO) nanowire (NWs) are promising materials for nanoelectromechanical systems (NEMS) and piezoelectric energy harvesting due to their coupled piezoelectric\, semiconducting nature and compatibility with low temperature synthesis methods. Theoretically\, ultra-thin ZnO NWs are expected to show a substantial increase in the piezoelectric response\, but their experimental fabrication and integration into functional devices still present difficulties. This thesis explores the effects of NW geometry\, d efect chemistry and device architecture on the electromechanical response of hydrothermally grown ZnO NWs. Two device architectures are developed for advanced nanoscale characterization\, including individual laterally contacted NW devices and vertically integrated Piezoelectric energy generators (PEGs). We report the first successful integration of electrically functional devices \nand (PEGs) with vertically aligned ultra-thin ZnO NWs of diameter about 20 nm for the experimental study of their piezoelectric behaviour. The systematic post-growth treatments like oxygen annealing\, vacuum annealing and oxygen plasma exposure are investigated by XRD\, FESEM\, PL\, XPS\, KPFM\, s-MIM and PFM. An oxygen annealing at 500° C showed that the free-carrier screening is reduced and increases the effective piezoelectric coefficient from 5.3 pm/V to 6.2 pm/V\, a 17% enhancement\, while \, preserving the NW morphology. Combining the size reduction of ZnO NWs to ultra-thin with oxygen annealing result in a synergistic enhancement of the piezoelectric performance. The oxygen annealed PEGs fabricated from 20-nm-diameter and 1-μm-long ZnO NWs showed a maximum output voltage of 134 mV under the applied force of at 1N\, which is an enhancement of about 306% compared to the devices based on the thicker (~80 nm) NWs which was 33mV. The results directly link the dimensions\, defect chemistry\, and electromechanical response\, showing that combining diameter engineering and defect engineering is an effective strategy for optimizing ZnO-basedpiezoelectric devices for future self-powered sensors and energy harvesting applications. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/soutenance-de-these-par-tanisha-badhauria/
LOCATION:Phelma Minatec\, Z104\, 3\, parvis Louis Néel\, Grenoble\, 38000\, France
CATEGORIES:Soutenance,Soutenance de Thèse
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261026T080000
DTEND;TZID=Europe/Paris:20261030T140000
DTSTAMP:20260626T085105Z
CREATED:20260424T140407Z
LAST-MODIFIED:20260626T085105Z
UID:10000136-1793001600-1793368800@sfp-alpes.fr
SUMMARY:Journées de la Matière Condensée (JMC 2026)
DESCRIPTION:Ces journées rassemblent la communauté scientifiques autour des thématiques relevant de la matière condensée\, des concepts aux applications. Le succès de ces journées en fait l’un des plus grand congrès de Physique en France et l’une des plus grandes rencontres de la physique de la Matière Condensée en Europe. \nLa soumission des résumés est ouverte et le restera jusqu’à fin mai. \nNous vous encourageons à vous inscrire dès l’ouverture afin de : \n\nbénéficier du tarif préférentiel\,\ngarantir votre participation\,\nfaciliter l’organisation scientifique et logistique.\n\nToutes les informations pratiques (programme préliminaire\, conférencier·es invités\, modalités d’inscription\, hébergement) sont régulièrement mis à jour sur le site de la conférence (Journées de la Matière Condensée 2026 – Sciencesconf.org) \nNous espérons vous retrouver nombreuses et nombreux pour cette nouvelle édition des JMC ! \n\n—— \n\n\nWe are pleased to announce the Journées de la matière condensée JMC 2026 (Condensed Matter Days 2026)\, which will be held from 26 to 30 October in Toulouse. \nThis conference brings together the scientific community to discuss topics related to condensed matter\, from concepts to applications. The success of this conference makes it one of the largest physics conferences in France and one of the largest gatherings of condensed matter physicists in Europe. \nAbstract submission is open and will remain so until the end of May. \nWe encourage you to register as soon as possible in order to benefit from the preferential rate\, guarantee your participation\, facilitate scientific and logistical organisation. \nAll practical information (preliminary programme\, guest speakers\, registration details\, accommodation) is available on the conference website: Journées de la Matière Condensée 2026 – Sciencesconf.org \n\n\n\nWe hope to see many of you at this new edition of the JMC !
URL:https://sfp-alpes.fr/event/journees-de-la-matiere-condensee-jmc-2026/
LOCATION:Université de Toulouse – Auditorium Marthe Condat\, 118\, route de Narbonne\, Toulouse\, 31400\, France
CATEGORIES:Conférence,Evènements
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261102T110000
DTEND;TZID=Europe/Paris:20261102T120000
DTSTAMP:20261101T225323Z
CREATED:20261101T225323Z
LAST-MODIFIED:20261101T225323Z
UID:10000330-1793617200-1793620800@sfp-alpes.fr
SUMMARY:Arthur GOETSCHY (Institut Langevin\, ESPCI Paris)
DESCRIPTION:Light\, a random walker ?\nRésumé : \nHow do waves such as light or sound propagate through fog\, paint\, or biological tissue? For decades\, this process has been described in terms of the diffusion of wave intensity. However\, this picture misses an essential ingredient: interference between distinct scattering paths. In this talk\, we will explore two situations in which interference profoundly alters wave transport. In the first part\, we will introduce a new propagation equation that describes how specially shaped waves\, such as open transmission channels created using wavefront-shaping techniques\, evolve inside scattering media. This provides access to the spatial structure of transport beyond the conventional diffusion picture. In the second part\, rather than shaping the wave\, we will shape the medium itself. We will show how strong spatial correlations can create pseudogaps and dramatically suppress wave transport\, leading to an Anderson-type transition with intriguing connection to percolation. This effect will be illustrated for vector light propagating through three-dimensional disordered media. \n_ \nContact : dorian.bouchet@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/arthur-goetschy-institut-langevin-espci-paris/
LOCATION:LiPhy – Salle de conférence\, LiPhy 140 avenue de la Physique\, St Martin d'Hères\, 38402\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261103T140000
DTEND;TZID=Europe/Paris:20261103T150000
DTSTAMP:20261015T124748Z
CREATED:20261015T124748Z
LAST-MODIFIED:20261015T124748Z
UID:10000302-1793714400-1793718000@sfp-alpes.fr
SUMMARY:Buyun ZHENG (doctorant)
DESCRIPTION:Physical properties and structure–property relationships in silver nanowire networks for low-emissivity applications\nRésumé : \nThe increasing demand for energy-efficient windows has stimulated the development of transparent low-emissivity (low-E) coatings capable of reducing radiative heat transfer while maintaining high visible transparency. Conventional low-E technologies\, such as metal-based multilayer structures and transparent conductive oxides\, provide high optical and infrared performance but may involve limitations related to flexibility\, processing\, or manufacturing complexity. Silver nanowire (AgNW) networks have emerged as a promising alternative owing to their low infrared emissivity\, high optical transparency\, mechanical flexibility\, and compatibility with scalable deposition processes. \nThis thesis investigates the physical properties of AgNW networks and their potential integration into low-E coatings\, with particular emphasis on structure–property relationships. The influence of key structural parameters\, including nanowire diameter\, length\, density\, and alignment\, is investigated through experimental characterization and physical analysis. In particular\, an optical percolation transition is identified at a network density well above the electrical percolation threshold\, accompanied by a transition in infrared angular emissivity from dielectric-like to metallic-like behavior. Furthermore\, dense AgNW networks are further shown to follow a generalized Hagen–Rubens relationship\, enabling infrared emissivity to be directly related to the electrical properties of the network. The impact of nanowire dimensions and network topology on low-E performance is further investigated to identify the structural parameters governing the trade-off between visible transparency and infrared emissivity. The stability of AgNW networks is also addressed through the deposition of oxide layers by spatial atomic layer deposition (SALD)\, with the aim of improving environmental and thermal stability while assessing their influence on the optical and emissive properties of the resulting coatings. Overall\, this work contributes to a more comprehensive understanding of the structure–property relationships in AgNW networks and provides physical insights into their use as transparent low-E coatings for energy-efficient applications. \nShort Bio/CV \nBuyun Zheng is a PhD student at the Laboratoire des Matériaux et du Génie Physique (LMGP).  His research focuses on the physical properties of silver nanowire (AgNW) networks and their integration into low-emissivity (low-E) coatings for energy-efficient windows. His work investigates how network structure influences the electrical\, optical\, and infrared properties of AgNW networks\, with particular interest in percolation phenomena and network topology. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/buyun-zheng-doctorant/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261103T140000
DTEND;TZID=Europe/Paris:20261103T150000
DTSTAMP:20261016T083835Z
CREATED:20261016T083835Z
LAST-MODIFIED:20261016T083835Z
UID:10000311-1793714400-1793718000@sfp-alpes.fr
SUMMARY:Giovanna MORIGI (Saarland University)
DESCRIPTION:Searching a quantum database using noise\nRésumé : \nEfficient retrieval of information is a core operation in the world wide web\, is essential for the sustainance of living organism\, and is a paradigm for optimization. Quantum physics holds the promise for a quadratic speedup with respect to existing classical search algorithms. Achieving such speedup\, however\, requires an outstanding degree of control of the quantum dynamics of systems of large size. This implies the suppression and corrections of the errors induced by the unavoidable action of the external environment. In this talk\, we will take inspiration from foraging in nature\, which results from the interplay of deterministic dynamics and stochasticity\, and discuss examples of quantum search dynamics emerging from the interplay between quantum coherent processes and the action of an external reservoir. We will discuss how these insights can contribute to our understanding of out-of-equilibrium dynamics in the quantum world and of the mechanisms of their stabilization\, and how they could pave the way for a novel class of robust quantum algorithms. \n_ \nContact : sergey.skipetrov@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/giovanna-morigi-saarland-university/
LOCATION:CNRS – Bâtiment A\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261104T110000
DTEND;TZID=Europe/Paris:20261104T120000
DTSTAMP:20261102T224515Z
CREATED:20261102T224515Z
LAST-MODIFIED:20261102T224515Z
UID:10000338-1793790000-1793793600@sfp-alpes.fr
SUMMARY:Michael SONNER (UC Berkeley)
DESCRIPTION:Multibath Influence Matrices : Universal Scaling from Real-Time Dynamics\nRésumé : \nWe introduce a framework for describing the real-time dynamics of quantum impurity models out of equilibrium which is based on the influence matrix approach. By replacing the dynamical map of a large fermionic quantum environment with an effective semi-group influence matrix (SGIM) which acts on a reduced auxiliary space\, we overcome the limitations of previous proposals\, achieving high accuracy at long evolution times\, which we demonstrate by computing the spectral function of the single impurity Anderson model. Once the effective compressed baths are obtained\, they can then be used as building blocks\, allowing the study of more complex models such as the two impurity Anderson model. At a coupling strength between the two dots comparable to the Kondo scale this model is known to host a two channel Kondo like non-fermi liquid point. We study this critical point by considering dynamical observables such as the relaxation time after a quench and the work exerted on a ramp through the critical point exhibiting Kibble Zurek like physics. Finally I’ll discuss applications of this method to non-equilibrium dynamical mean field theory. \nContact : loic.herviou@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/michael-sonner-uc-berkeley/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261105T140000
DTEND;TZID=Europe/Paris:20261105T150000
DTSTAMP:20261101T225930Z
CREATED:20261022T152704Z
LAST-MODIFIED:20261101T225930Z
UID:10000316-1793887200-1793890800@sfp-alpes.fr
SUMMARY:ATTENTION !!! Séminaire annulé et reporté au 12 novembre !!! - Hélène CASTEBRUNET (maître de conférence UGA) & Gérémy PANTHOU (physicien-adjoint CNAP à l'Institut des Géosciences de l'Environnement (Grenoble))
DESCRIPTION:Eau dans le Y Grenoblois : reste-t-il une seule goutte qui n’ait pas été impactée par les activités humaines ?\nRésumé : \nA venir… \n_ \nContact : yvonne.soldo@neel.cnrs.fr \n 
URL:https://sfp-alpes.fr/event/helene-castebrunet-maitre-de-conference-uga-geremy-panthou-physicien-adjoint-cnap-a-linstitut-des-geosciences-de-lenvironnement-grenoble/
LOCATION:CNRS – Salle Nevill Mott (D420)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261105T160000
DTEND;TZID=Europe/Paris:20261105T170000
DTSTAMP:20261022T093333Z
CREATED:20260723T163914Z
LAST-MODIFIED:20261022T093333Z
UID:10000219-1793894400-1793898000@sfp-alpes.fr
SUMMARY:ATTENTION !!! Séminaire annulé et reporté au 19 novembre !!! Guillaume HEBRARD
DESCRIPTION:Extraordinaires planètes extrasolaires\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13798/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/guillaume-hebrard/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261106T110000
DTEND;TZID=Europe/Paris:20261106T120000
DTSTAMP:20261101T224649Z
CREATED:20261101T224603Z
LAST-MODIFIED:20261101T224649Z
UID:10000329-1793962800-1793966400@sfp-alpes.fr
SUMMARY:Diego GARCIA OVALLE (Université de Sherbrooke)
DESCRIPTION:Spin and orbital angular momentum in periodic solids : From nonmagnetic to magnetic materials\nLe séminaire théorie est financé par la fédération de recherche Quantalps. \nRésumé : \nOver the past few years\, the study of the electron’s degrees of freedom have received a major interest in condensed matter\, both theoretically and experimentally. In particular\, investigating the spin and the orbital angular momentum is a source of a fascinating landscape of new physics in periodic systems\, where materials that are effectively nonmagnetic and even composed with light elements can be used for the new generation of more efficient electronic devices. \nIn this talk\, I will explain from the theory point of view how these two fundamental properties of the electron have a dramatic impact on the nonequilibrium responses of quantum materials. Firstly\, in the nonmagnetic case\, I will describe how the angular momentum of the electron can be connected to the nonlinear Hall effect in noncentrosymmetric materials. When moving forward to analyze spin and orbital transport exclusively\, I will focus on distinguishing the role of spin-orbit coupling and the Rashba effect on the spin and orbital-to-charge conversion in materials without inversion symmetry\, which are key figures of merit for the optimization of the basic structures in data storage. Secondly\, we will switch the gear to ferromagnetic materials to discuss two distinct effects in low symmetry crystals that emerge from the trigonal warping of the Fermi surface: A special class of spin-orbit torque and the so-called crystalline in-plane Hall effect. Last but not least\, I will present an important prospect of my work that aims to exploit the spin and the orbital angular momentum in antiferromagnets and altermagnets from surface engineering. Here\, I will illustrate the instance of the nonequilibrium spin polarization reported very recently\, and its potential extension to superconductivity. Exploring nonequilibrium responses arising on the spin or the angular momentum serve not only as a probe of the electronic structure of quantum materials\, but also as tools that might shed light on how to control them externally for novel applications in spin-orbitronics. \n_ \nContact : serge.florens@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/diego-garcia-ovalle-universite-de-sherbrooke/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261109T110000
DTEND;TZID=Europe/Paris:20261109T120000
DTSTAMP:20261103T220347Z
CREATED:20261103T220347Z
LAST-MODIFIED:20261103T220347Z
UID:10000343-1794222000-1794225600@sfp-alpes.fr
SUMMARY:Bin LAI (UFZ\, Germany)
DESCRIPTION:Synthetic electro-biotechnology : Bridging electrochemistry with microbiology to push the biotechnology boundaries\nRésumé : \nMathematics defines the boundaries of biology. In developing a biotechnological process\, one of the most fundamental design principles is the conservation of mass and energy. These balances define the stoichiometric limits of carbon and electron partitioning across the product spectrum\, thereby constraining achievable product yields and\, ultimately\, process rates and titers. In this seminar\, I will introduce our approach to tackling these intrinsic constraints through a hybrid bioelectrochemical strategy. Specifically\, we develop a mediator-based extracellular electron transfer pathway that enables selective targeting and modulation of microbial electron flow. The integration of electrochemistry and microbiology offers a promising solution to partially decouple microbial carbon and electron balances\, thereby overcoming the natural upper limits of conventional biotechnology. \n_ \nContact : natale.scaramozzino@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/bin-lai-ufz-germany/
LOCATION:LiPhy – Salle de conférence\, LiPhy 140 avenue de la Physique\, St Martin d'Hères\, 38402\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261110T140000
DTEND;TZID=Europe/Paris:20261110T150000
DTSTAMP:20261101T223942Z
CREATED:20261101T223658Z
LAST-MODIFIED:20261101T223942Z
UID:10000328-1794319200-1794322800@sfp-alpes.fr
SUMMARY:Ivan AMELIO (Unversity of Ghent)
DESCRIPTION:Quantum simulation with Fluxonium Qutrit Arrays\nRésumé : \nFluxonium superconducting circuits were originally proposed to realize highly coherent qubits. In this talk\, we explain how these circuits can be used to implement and harness qutrits\, by tuning their energy levels and matrix elements via an external flux bias. In particular\, we investigate arrays of fluxonium qutrits\, and their potential for the quantum simulation of exotic quantum matter. We identify different operational regimes\, classified according to the plasmon-like versus fluxon-like nature of the qutrit excitations. Highly tunable on-site interactions are complemented by correlated single-particle hopping\, pair hopping and non-local interactions\, which naturally emerge and have different weights in the different regimes. We investigate the rich ground-state phase diagram of qutrit arrays and propose practical dynamical experiments to probe the different regimes. Future directions towards analogue simulation of exotic quantum matter are presented. \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/ivan-amelio-unversity-of-ghent/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
END:VCALENDAR