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X-WR-CALNAME:SFP Alpes
X-ORIGINAL-URL:https://sfp-alpes.fr
X-WR-CALDESC:Évènements pour SFP Alpes
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TZID:Europe/Paris
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260128T110000
DTEND;TZID=Europe/Paris:20260128T120000
DTSTAMP:20260124T012948Z
CREATED:20260124T010421Z
LAST-MODIFIED:20260124T012948Z
UID:10000021-1769598000-1769601600@sfp-alpes.fr
SUMMARY:Giovanni FINOCCHIO (University of Messina\, Italy)
DESCRIPTION:Adaptive Ising Machines : a paradigm combining oscillatory dynamics and probabilistic sampling\nRésumé : \nThe first part of the talk will focus on probabilistic computing which is one direction to implement Ising Machines with Probabilistic computing that is a computational paradigm using probabilistic bits (p-bits)\, unit in the middle between standard bit and q-bits. I will show how to map hard combinatorial optimization problems (Max-Sat\, Max-Cut\, etc) into Ising machine and how to implement those in spintronic technology. I will present new directions in this field considering the concept of extended probabilistic variables such as p-dit and p-int. I will then discuss oscillatory Ising Machines dynamics with the aim of introducing the concept of Adaptive Ising Machines. For doing that\, first I will discuss the universal theory of phase auto-oscillators driven by a bi-harmonic signal (having frequency components close to single and double of the free-running oscillator frequency) with noise showing how deterministic phase locking and stochastic phase slips can be continuously tuned by varying the relative amplitudes and frequencies of the driving components. I will then focus on how to use spin-torque nano-oscillators for implementing deterministic\, probabilistic computing and dual-mode operation of Adaptive Ising Machines that dynamically combines both regimes within the same hardware platform by properly tuning noise strength and a bi-harmonic excitation. Benchmarking on different classes of combinatorial optimization problems\, the CoIM exhibits complementary performance as compared to OIMs and probabilistic Ising machines PIMs\, with adaptability to the specific problem class. This work introduces the first oscillator-based Ising machine capable of transitioning between deterministic and probabilistic computation\, opening a path toward scalable\, CMOS-compatible hardware for hybrid optimization and inference. This work was supported under the project number 101070287 — SWAN-on-chip — HORIZON-CL4-2021-DIGITAL-EMERGING-01\, the project PRIN 2020LWPKH7 funded by the Italian Ministry of University and Research and by the PETASPIN association (www.petaspin.com) and it has been also funded by European Union (NextGeneration EU)\, through the MUR-PNRR project SAMOTHRACE (ECS00000022). \nContact : admin.spintec@cea.fr
URL:https://sfp-alpes.fr/event/adaptive-ising-machines-a-paradigm-combining-oscillatory-dynamics-and-probabilistic-sampling/
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:20260128T110000
DTEND;TZID=Europe/Paris:20260128T120000
DTSTAMP:20260124T031950Z
CREATED:20260123T162130Z
LAST-MODIFIED:20260124T031950Z
UID:10000020-1769598000-1769601600@sfp-alpes.fr
SUMMARY:Juan POLO (Technology Innovation Institute\, Abu Dhabi)
DESCRIPTION:Static impurity in a mesoscopic system of SU(N) fermionic matter-wavesJuan POLO \nAbstract : \nWe investigate the effects of a static impurity\, modeled by a localized barrier\, in a one-dimensional mesoscopic system comprised of strongly correlated repulsive SU(N)-symmetric fermions. For a mesoscopic sized ring under the effect of an artificial gauge field\, we analyze the particle density and the current flowing through the impurity at varying interaction strength\, barrier height and number of components. We find a non-monotonic behaviour of the persistent current\, due to the competition between the screening of the impurity\, quantum fluctuations\, and the phenomenon of fractionalization\, a signature trait of SU(N) fermionic matter-waves in mesoscopic ring potentials. This is also highlighted in the particle density at the impurity site. We show that the impurity opens a gap in the energy spectrum selectively\, constrained by the total effective spin and interaction. Our findings hold significance for the fundamental understanding of the localized impurity problem and its potential applications for sensing and interferometry in quantum technology. \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/static-impurity-in-a-mesoscopic-system-of-sun-fermionic-matter-waves/
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:20260130T110000
DTEND;TZID=Europe/Paris:20260130T120000
DTSTAMP:20260124T032613Z
CREATED:20260123T171105Z
LAST-MODIFIED:20260124T032613Z
UID:10000022-1769770800-1769774400@sfp-alpes.fr
SUMMARY:Félix PALM (Université Libre de Bruxelles)
DESCRIPTION:Quantum Hall states in optical lattices : Revealing hidden long-range\nAbstract : \nThe study of interacting quantum Hall states and their exotic anyonic excitations poses a major challenge in current experimental and theoretical research. Quantum simulators\, in particular cold atoms in optical lattices\, provide a promising platform to realize\, manipulate\, and understand such systems with unprecedented control. In this talk\, I will discuss how the local resolution of quantum gas microscopes extends the toolbox of quantum Hall physics. To this end\, I will discuss a fundamental question regarding the topological order of quantum Hall states: the speculated condensation of composite bosons exhibiting quasi long-range order. I will exemplify this mechanism in bosonic [1] and fermionic [2] systems and touch upon its detectability in tensor network simulations and quantum gas microscopes. If time permits\, I will also touch upon the interplay of spin and charge in fermionic quantum Hall states\, resulting in ferromagnetism and skyrmionic spin-textures [2\,3]. Again\, I will present signatures to identify these states in cold-atom quantum simulators. References : [1] Pauw et al.\, Detecting Hidden Order in Fractional Chern Insulators; PRR 6 (2024)  [2] Pauw et al.\, From hidden order to skyrmions: Quantum Hall states in an extended Hofstadter-Fermi-Hubbard model; arXiv:2509.12184 (2025)  [3] Palm et al.\, Ferromagnetism and skyrmions in the Hofstadter–Fermi–Hubbard model; NJP 25 (2023) Contact : cecile.repellin@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/quantum-hall-states-in-optical-lattices-revealing-hidden-long-range-order/
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:20260131T000000
DTEND;TZID=Europe/Paris:20260131T235959
DTSTAMP:20260129T103601Z
CREATED:20260124T040835Z
LAST-MODIFIED:20260129T103601Z
UID:10000031-1769817600-1769903999@sfp-alpes.fr
SUMMARY:33e édition des olympiades de physique
DESCRIPTION:Ce concours scientifique expérimental destiné aux lycéens\, permet à de petites équipes d’élèves de vivre pendant plusieurs mois une passionnante aventure scientifique autour d’un projet expérimental dont ils choisissent librement le sujet et dans lequel ils vont pouvoir laisser s’exprimer leur créativité et leur initiative. \nLe samedi 31 janvier de 10h à 15h30\, venez découvrir leurs travaux lors de l’exposition publique dans la Grande Verrière du Château Saint-Léger. \nA l’issue de l’exposition publique\, une conférence passionante « Des concepts aux applications : les deux révolutions quantiques » par Alain Aspect\, prix Nobel de physique 2022\, sera proposée dans le Grand Auditorium de 16h30 à 17h30. \nPlus d’informations : \nhttps://www.eventbrite.fr/e/billets-33e-edition-des-olympiades-de-physique-1977023995992?aff=oddtdtcreator \niX campus – 34 rue de la Croix de Fer – 78100 St-Germain-en-Laye (France)\nContact : emma.gosse@orange.fr
URL:https://sfp-alpes.fr/event/33e-edition-des-olympiades-de-physique/
LOCATION:St-Germain-en-Laye\, iX campus
CATEGORIES:Evènements
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260202T110000
DTEND;TZID=Europe/Paris:20260202T120000
DTSTAMP:20260130T141207Z
CREATED:20260129T120516Z
LAST-MODIFIED:20260130T141207Z
UID:10000035-1770030000-1770033600@sfp-alpes.fr
SUMMARY:Sara MATYAS (CNRS Innovation)
DESCRIPTION:Continuum des financements des projets de valorisation\nRésumé : \nLes financements de valorisation sont nombreux\, chacun avec ses guichets\, ses règles et ses critères… Et si on éclaircissait ce sujet ensemble ? À partir d’exemples concrets\, nous parcourrons les différents chemins possibles pour valoriser un projet de recherche\, depuis l’idée fondamentale jusqu’à sa valorisation. Vous verrez que la start‑up n’est qu’une option parmi d’autres. L’objectif : décoder clairement les informations essentielles à retenir pour chaque type de financement et comprendre la dynamique du continuum (Pré‑maturation CNRS\, Pré‑maturation PUI\, Maturation SATT\, programme RISE\, BTF Lab\, Incubation\, Transfert\, Licensing…). \nContact : bahram.houchmandzadeh@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/continuum-des-financements-des-projets-de-valorisation/
LOCATION:LiPhy\, Salle de Conférence\, 140 rue de la Physique\, St Martin d'Hères\, 38400
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260203T140000
DTEND;TZID=Europe/Paris:20260203T150000
DTSTAMP:20260124T033150Z
CREATED:20260124T033007Z
LAST-MODIFIED:20260124T033150Z
UID:10000023-1770127200-1770130800@sfp-alpes.fr
SUMMARY:Mandar M. DESHMUKH (Tata Institute of Fundamental Research\, India)
DESCRIPTION:2D van der Waals Josephson devices\nRésumé : \nI will discuss two classes of Josephson devices. First\, proximitized graphene-based Josephson junctions that are gate tunable. The graphene Josephson FET enables a quantum-noise-limited parametric amplifier with performance comparable to the best discrete amplifiers in this class [1]. One can realize extremely sensitive and fast bolometers [2] – useful for dark matter search\, among other applications. Second\, twisted van der Waals heterostructures based on the high-temperature superconductor Bi2Sr2CaCu2O8 et δ enable the realization of a high-temperature Josephson diode [3] for the first time. Such Josephson diodes offer an opportunity to realize new devices at liquid nitrogen temperatures. While opportunities abound with vdW JJs\, the challenge of scalability must be overcome to translate them into real-world devices. \nReferences : \n[1] « Quantum-noise-limited microwave amplification using a graphene Josephson junction » Joydip Sarkar et al. \, Nature Nanotechnology 17\, 1147 (2022).  \n[2] “ Kerr non-linearity enhances the response of a graphene Josephson bolometer\,” Sarkar et al. \, Nature Communications volume 16\, 7043 (2025).  \n[3] « High-temperature Josephson diode\, » Sanat Ghosh et al. Nature Materials 23\, 612 (2024). \n  \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/mandar-m-deshmukh-tata-institute-of-fundamental-research-india/
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:20260203T170000
DTEND;TZID=Europe/Paris:20260203T183000
DTSTAMP:20260124T033738Z
CREATED:20260124T033738Z
LAST-MODIFIED:20260124T033738Z
UID:10000026-1770138000-1770143400@sfp-alpes.fr
SUMMARY:W. John KAO (Président de l’Université NTHU de Taïwan)
DESCRIPTION:Geopolitical and strategic challenges in the semiconductor sector comparative perspectives from NTHU and UGA\nLes semi-conducteurs sont aujourd’hui au cœur de la transformation numérique et industrielle mondiale\, soulevant des défis majeurs de souveraineté technologique\, de compétitivité économique et de sécurité stratégique. Taïwan occupe dans ce contexte une place absolument centrale\, tant par son excellence industrielle que par la densité de ses écosystèmes de recherche\, de formation et d’innovation\, au premier rang desquels figure Hsinchu\, véritable épicentre taïwanais des semi-conducteurs. De son côté\, Grenoble Alpes\, véritable hub de la microélectronique et silicon valley européenne\, concentre près d’un quart des emplois français de la filière et abrite de nombreux laboratoires de pointe\, soulignant son rôle stratégique à différentes échelles. La présence du Professeur Kao\, Président de la NTHU – université de référence mondiale dans ce domaine – apporte un éclairage unique et de tout premier plan sur ces enjeux majeurs. \nCette conférence\, d’une durée d’une heure et en langue anglaise\, sera animée par la maîtresse de cérémonie\, Dr Pauline Ravinet\, attachée scientifique et universitaire à l’Office français à Taipei. Elle comprendra une brève présentation de la part de W. John Kao\, suivie d’un échange avec Yassine Lakhnech\, Président de l’UGA\, puis d’une session de questions-réponses avec le public. \nGratuit\, sur Réservation \nContact : lou.boucard-pra@unvi-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/w-john-kao-president-de-luniversite-nthu-de-taiwan/
LOCATION:Grenoble INP – Auditorium\, UGA\, parvis Louis Néel\, 38000 Grenoble\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260205T080000
DTEND;TZID=Europe/Paris:20260205T100000
DTSTAMP:20260130T170445Z
CREATED:20260124T034254Z
LAST-MODIFIED:20260130T170445Z
UID:10000027-1770278400-1770285600@sfp-alpes.fr
SUMMARY:Claude RACINET (Académie Delphinale/RHEOP)
DESCRIPTION:Nous sommes tous des prématurés\nIntervention de Claude RACINET de l’Académie Delphinale et du Registre des Handicaps de l’Enfant et Observatoire Périnatal de l’Isère et de la Savoie  (RHEOP). \n  \nContact : sante-communication@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/claude-racinet-academie-delphinale-et-rheop/
LOCATION:CHU – Salle Gilbert Faure\, CHU Grenoble Alpes Pavillon Vercors (côté Belledonne)\, La Tronche\, 38043\, France
CATEGORIES:Séminaire
ORGANIZER;CN="CHU Grenoble":MAILTO:sante-communication@univ-grenoble-alpes.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260205T140000
DTEND;TZID=Europe/Paris:20260205T150000
DTSTAMP:20260129T152615Z
CREATED:20260129T152413Z
LAST-MODIFIED:20260129T152615Z
UID:10000036-1770300000-1770303600@sfp-alpes.fr
SUMMARY:Flavien MUSEUR (PSI / ETH Zurich)
DESCRIPTION:Artificial spin ice on the CaVO lattice : a bridge from square to kagome\nRésumé : \nArtificial spin ices are arrangements of dipolar-coupled nanomagnets\, with magnetic moments that behave like Ising spins as a result of shape anisotropy. They have been successfully implemented as platforms for imaging and controlling phase transitions in systems with long-range interactions [1]. However\, the exploration of thermally-activated phase transitions has been mostly focused on two lattices: the square and the kagome. Artificial square ice orders readily into an antiferromagnetic\, two-in/two-out ground state\, with a transition belonging to the Ising 2D universality class [2]. In contrast\, artificial kagome ice is highly frustrated and the predicted phase diagram is richer [3\, 4]. Upon lowering the temperature\, the system first experiences a crossover from a paramagnetic to a spin liquid state with no long range order\, then transitions into a Coulomb phase with charge crystallization. This is an example of magnetic moment fragmentation [5\, 6]\, in which each magnetic moment can be decomposed into the sum of a long-range ordered\, divergence-full fragment and a fluctuating\, divergence-free fragment which can be elegantly mapped to a dimer model. \nWe have carried out a comprehensive characterization of the thermodynamics of an artificial spin ice based on the CaVO (also called the square-octagon) lattice\, part of the family of Archimedean lattices [7]. We show that the magnetic interactions on the vertex level can be significantly tuned by changing the relative sizes of square and octagonal plaquettes\, while preserving the lattice constant and symmetries. This results in a complex phase diagram\, with two very different ground states and ordering processes separated by a multicritical region. Each bears strong similarities with either the square or kagome phenomenologies. We map out this phase diagram with Monte-Carlo simulations and magnetic force microscopy of as-grown configurations. Different spin liquid states can be observed\, as well as moment fragmentation for some geometries. Finally\, we perform temperature and field-dependant magnetometry measurements on a series of lattice geometries\, making it possible to detect thermally-active correlated phases without using large-scale instrumentation. Our work paves the way for engineering exotic magnetic properties at the mesoscale. By tuning frustration within a single lattice geometry\, we can design artificial systems that exhibit spin liquid and multicritical behaviours – something that\, in natural magnetic systems\, typically requires extremes of either pressure\, field or temperature. \n\nS. H. Skjærvø et al.\, Nature Reviews Physics 2\, 13–28 (2019).\nO. Sendetskyi et al.\, Physical Review B 99\, 214430 (2019).\nG. Möller and R. Moessner\, Physical Review B 80\, 140409 (2009).\nG.-W. Chern et al.\, Physical Review Letters 106\, 207202 (2011).\nM. E. Brooks-Bartlett et al.\, Physical Review X 4\, 011007 (2014).\nB. Canals et al.\, Nature Communications 7\, 11446 (2016).\nO. A. Starykh et al.\, Physical Review Letters 77\, 2558–2561 (1996).\n\nContact : elsa.lhotel@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/flavien-museur-psi-eth-zurich/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
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