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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260716T110000
DTEND;TZID=Europe/Paris:20260716T120000
DTSTAMP:20260713T081226Z
CREATED:20260713T081143Z
LAST-MODIFIED:20260713T081226Z
UID:12416-1784199600-1784203200@fermi.univ-tlse3.fr
SUMMARY:Topological phases of the bilinear-biquadratic spin-1 chain with single-ion anisotropy. - (Zakaria Jouini / LPT / Seminar). -16/07/2026\, 11H
DESCRIPTION:Séminaire LPT \nZakaria Jouini (EPFL) \nSeminar LPT\, 16/07/2026\, 11H\, 3R4\, salle de conférence \nSummary \nSince Haldane’s prediction of a finite spin gap in integer-spin chains\, the spin-1 chain has served as a paradigmatic model of quantum magnetism. Beyond the Heisenberg interaction\, the most general SU(2)-invariant model includes a biquadratic interaction\, often completed by an on-site anisotropy\, typical of spin-1 ions in solids. \nIn this talk\, I will present an approach combining bosonization and Bethe ansatz to show that dominant biquadratic interactions in the presence of an on-site anisotropy stabilize a gapped topological phase\, in a region of the phase diagram previously identified by numerical studies as critical with central charge c=2. I will argue that this phase is a new realization of the Haldane phase in the spin-1 chain\, characterized by hidden quadrupolar order\, and I will discuss the prospects and implications for its experimental realization.
URL:https://fermi.univ-tlse3.fr/event/topological-phases-of-the-bilinear-biquadratic-spin-1-chain-with-single-ion-anisotropy-sariah-al-saati-lpt-seminar-16-07-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260710T140000
DTEND;TZID=Europe/Paris:20260710T170000
DTSTAMP:20260624T085258Z
CREATED:20260619T080037Z
LAST-MODIFIED:20260624T085258Z
UID:12396-1783692000-1783702800@fermi.univ-tlse3.fr
SUMMARY:Correlated quantum-chemistry method for solids with the Clifford formalism. - (Amer Alrakik / LCPQ / Thèse). - 10/07/2026\, 14H
DESCRIPTION:Soutenance de thèse \nAmer Alrakik\, LCPQ\, Seminar room\, Bat. 3R4 \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/correlated-quantum-chemistry-method-for-solids-with-the-clifford-formalism-amer-aalrakik-lcpq-these-10-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCPQ
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260709T150000
DTEND;TZID=Europe/Paris:20260709T163000
DTSTAMP:20260709T071842Z
CREATED:20260620T085455Z
LAST-MODIFIED:20260709T071842Z
UID:12292-1783609200-1783614600@fermi.univ-tlse3.fr
SUMMARY:CRYSTAL\, an ongoing project for a theoretical chemical approach to solids. - (Silvia Casassa / LCPQ / Seminar). - 9 / 07 /2026\, 15H
DESCRIPTION:Séminaire du LCPQ \nSilvia Casassa CRYSTAL group in the University of Turin \nSeminar LCPQ\, 9/07/2026\, 15H
URL:https://fermi.univ-tlse3.fr/event/crystal-an-ongoing-project-for-a-theoretical-chemical-approach-to-solids-silvia-casassa-lcpq-seminar-9-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCPQ,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260707T140000
DTEND;TZID=Europe/Paris:20260707T150000
DTSTAMP:20260622T121552Z
CREATED:20260621T121411Z
LAST-MODIFIED:20260622T121552Z
UID:12390-1783432800-1783436400@fermi.univ-tlse3.fr
SUMMARY:Prediction and Control of Evolving Complex Communities. - (Derviş Can Vural / LPT / Seminar). -7/07/2026\, 14H
DESCRIPTION:Séminaire LPT \nDerviş Can Vural (University of Notre Dame) \nSeminar LPT\, 7/07/2026\, 14H\, 3R4\, salle de conférence \nSummary :\nThe interactions between species in a complex ecological community can be described in terms of simple reaction kinetics: Just like an enzyme turns a substrate into a product\, a goat transforms plant mass into goat mass. However\, unlike ordinary chemical reactions\, the stoichiometry and reaction rates between species can change over time. In this talk I will present the mathematical description of three interesting cases where this happens [1-4]. (1) Evolution: Species adapt to each other: for example\, some plants will evolve to become bitter or poisonous\, in which case a goat may not carry out its transformation as effectively. In turn\, the goat may evolve in response to this change\, say\, producing enzymes that will neutralize the poison. This “evolutionary arms race” will often finalize with an extinction (2) Migration: In some other cases\, one or more new species might migrate and invade a community\, thereby transforming the reaction network. This could happen naturally\, through unintentional human activities\, or intentionally\, via ecological engineering. (3) Fluctuations: The mass transfer stoichiometry between species are often modulated by external factors such as sunlight\, pH\, and temperature: For example\, in a cold year\, a goat has to eat more plant mass before producing a new goat\, since it must spend some of the energy to produce heat. In all three cases\, I will focus on the statistics of species abundances\, and the “first passage statistics” to extinction or some other biologically relevant target.\n[1] V. Nguyen\, D.C. Vural\, Extinction in complex communities as driven by adaptive dynamics. Journal of Evolutionary Biology\, January 1 (2021)\n[2] V. Nguyen\, D.C. Vural\, Theoretical guidelines for editing ecological communities. Journal of Theoretical Biology\, 534\, 110945 (2021)\n[3] M. Heidelman\, D.C. Vural\, Coexistence\, crossover and extirpation in coalescent communities and ecotones\, Oikos\, e11952 (2026 )\n[4] Eskin C\, Nguyen V\, Vural DC. Feasibility as a moving target: Fluctuating species interactions lead to universal power law in equilibrium abundances. arXiv preprint arXiv:2602.18942. 2026 Feb 21.
URL:https://fermi.univ-tlse3.fr/event/prediction-and-control-of-evolving-complex-communities-dervis-can-vural-lpt-seminar-7-07-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260702T140000
DTEND;TZID=Europe/Paris:20260702T153000
DTSTAMP:20260626T080837Z
CREATED:20260626T060758Z
LAST-MODIFIED:20260626T080837Z
UID:12407-1783000800-1783006200@fermi.univ-tlse3.fr
SUMMARY:The thermal Hall response of the phonon gas -  (Kamran Behnia /  LNCMI / Seminar). - 2/07/2026\, 14H
DESCRIPTION:Seminar LNCMI \nKamran Behnia\, Laboratoire de Physique et Etude de Matériaux (ESPCI\, Université Paris Sciences & Lettres\, CNRS) \nSeminar LNCMI\, 2/07/2026\, 14H\, LNCMI\, Toulouse \nAbstract\nFirst observed two decades ago [1]\, the phonon Hall effect\, is nowadays observed in numerous insulators\, including non-magnetic ones [2-4].\nThe observation implies a field-induced misalignment between the heat flux and the entropy flux vectors. Phonon thermal Hall conductivity peaks when most phonon-phonon collisions become normal\, indicating a link with phonon hydrodynamics and a magnetic field induced change in the balance of three phonon events.\nThis conjecture is backed by the case of molecular gases subject to magnetic field. In their case\, the Seftleben-Beenakker effect [5] arises due to the field-induced modification of the molecular collision cross sections. The breakdown of the Born-Oppenheimer approximation in a magnetic field can offer a geometric [Berry] phase to ordinary acoustic phonons. A picture\, which would explain the experimentally observed bound to the thermal Hall of elemental insulators [6]. \n[1] C. Strohm\, G. L. J. A. Rikken and P. Wyder\, Phys. Rev. Lett. 95\, 155901 (2005).\n[2] X. Li\, B. Fauqué\, Z. Zhu\, and K. Behnia\, Phys. Rev. Lett. 124\, 105901 (2020).\n[3] X. Li\, Y. Machida\, A. Subedi\, Z. Zhu\, L. Li & K. Behnia\, Nature Comm. 14\, 1027 (2023).\n[4] X. B. Jin et al.\, Phys. Rev. Lett. 135\, 196302 (2025).\n[5] L. Hermans\, A. Schutte\, H. Knaap\, and J. Beenakker\, Physica 46\, 491 (1970).\n[6] K. Behnia\, Phonon thermal Hall as a lattice Aharonov-Bohm effect\, SciPost Phys. Core 8\, 061 (2025). \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/the-thermal-hall-response-of-the-phonon-gas-kamran-behnia-lncmi-seminar-2-07-2026-14h/
LOCATION:Salle de seminaire du LNCMI\, Champs Magnétiques Pulsés\, 143 avenue de Rangueil\, Toulouse\, France
CATEGORIES:Events,LNCMI,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260626T110000
DTEND;TZID=Europe/Paris:20260626T123000
DTSTAMP:20260626T080829Z
CREATED:20260626T070749Z
LAST-MODIFIED:20260626T080829Z
UID:12385-1782471600-1782477000@fermi.univ-tlse3.fr
SUMMARY:Microphysiological systems and microenvironments models for cellular engineering - (Laurent MALAQUIN / Seminar / SFP). - 26/06/2026\, 11H
DESCRIPTION:Séminaire SFP \nLaurent MALAQUIN\, LAAS\, Salle de Conférence\, Bât. 3R4 \nMicrophysiological systems and microenvironments models for cellular engineering \n 
URL:https://fermi.univ-tlse3.fr/event/microphysiological-systems-and-microenvironments-models-for-cellular-engineering-laurent-malaquin-seminar-sfp-26-06-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,Seminars,SFP / SFC
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2026/06/AFFICHE_SFP_Malaquin_26_06_2026.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260622T093000
DTEND;TZID=Europe/Paris:20260622T123000
DTSTAMP:20260624T085322Z
CREATED:20260606T075654Z
LAST-MODIFIED:20260624T085322Z
UID:12338-1782120600-1782131400@fermi.univ-tlse3.fr
SUMMARY:QED variationnelle pour les propriétés moléculaires. - (Ryan Benazzouk / LCPQ / Thèse). - 22/06/2026\, 9H30
DESCRIPTION:Soutenance de thèse \nRyan Benazzouk\, LCPQ\, Seminar room\, Bat. 3R4 \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/qed-variationnelle-pour-les-proprietes-moleculaires-ryan-benazzouk-lcpq-these-22-06-2026-9h30/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCPQ
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260618T140000
DTEND;TZID=Europe/Paris:20260618T150000
DTSTAMP:20260609T091330Z
CREATED:20260607T091125Z
LAST-MODIFIED:20260609T091330Z
UID:12341-1781791200-1781794800@fermi.univ-tlse3.fr
SUMMARY:Study of the interplay of Magnetism\, Structure\, and Electronic Properties in the Iron-Based superconductor BaFe2S3 -  (Yassine Oubaid /  LNCMI / Seminar). - 18/06/2026\, 14H
DESCRIPTION:Seminar LNCMI \nYassine Oubaid\, Laboratoire de Physique du Solide at Université Paris Saclay \nSeminar LNCMI\, 18/06/2026\, 14H\, LNCMI\, Toulouse \nAbstract\nRecently\, a family of quasi-one-dimensional Fe-based spin-ladder compounds with the formula BaFe2X3\, where X represents a chalcogen (Se or S)\, has been shown to exhibit superconductivity under pressures exceeding 10 GPa\, with critical temperatures of approximately 10 K or 26 K\, depending on the chalcogen species [1]. \nHowever\, the intriguing properties of these compounds extend far beyond superconductivity. At ambient pressure\, they behave as Mott insulators and display exotic structural and magnetic phenomena\, including multiferroicity near room temperature. As such\, these materials encompass key characteristics of strongly correlated quantum systems. Building on extensive investigations of BaFe2Se3\, this work presents a comprehensive experimental study of BaFe2S3. \nA detailed examination of the structural\, magnetic\, and electronic properties of BaFe2S3 as a function of temperature and pressure was carried out using a multi-technique approach. This included synchrotron X-ray diffraction\, neutron diffraction\, inelastic neutron scattering\, and synchrotron-based infrared spectroscopy\, performed on both powder and single crystals from the same synthesis batch. These experiments enabled the construction of a comprehensive picture of the underlying physics as a function of temperature and pressure. At ambient pressure\, our study revealed novel phases featuring new atomic structures and a previously unreported structural transition to a polar structure\, demonstrating that BaFe2S3 hosts a combination of exotic tilted stripe magnetic order\, multiferroicity\, and magnetoelasticity [2\, 3]. \nUnder pressure\, by combining complementary structural\, magnetic\, optical\, and transport measurements\, we obtained a comprehensive picture of the magnetic and atomic evolution of BaFe2S3. Our results provide evidence for an intriguing dichotomy between localized and itinerant Fe 3d electrons\, which helps explain both the persistence of magnetic order and the emergence of superconductivity. In particular\, we have significantly revised the interpretation of several experimental observations previously reported in the literature\, substantially enhancing our understanding of magnetoelastic coupling\, electronic gap opening\, the insulator-to-metal transition\, structural degrees of freedom\, and superconductivity. \n[1] H. et al. Takahashi. Pressure-induced superconductivity in the iron-based ladder material BaFe2S3. Nature Materials\, 14:1008–1012\, 2015. \n[2] Y.Oubaid et al. New insight on the properties of the superconducting iron spin ladder BaFe2S3. Frontiers of Physics\, 21(5):055201\, 2026. \n[3] Y.Oubaid et al. Ground state of BaFe2S3 from lattice and spin dynamics. Physical Review B\, 2026. Accepted. \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/study-of-the-interplay-of-magnetism-structure-and-electronic-properties-in-the-iron-based-superconductor-bafe2s3-yassine-oubaid-lncmi-seminar-18-06-2026-14h/
LOCATION:Salle de seminaire du LNCMI\, Champs Magnétiques Pulsés\, 143 avenue de Rangueil\, Toulouse\, France
CATEGORIES:Events,LNCMI,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260618T110000
DTEND;TZID=Europe/Paris:20260618T123000
DTSTAMP:20260609T080635Z
CREATED:20260607T071853Z
LAST-MODIFIED:20260609T080635Z
UID:12298-1781780400-1781785800@fermi.univ-tlse3.fr
SUMMARY:Interplay of Amino Acid Sequence\, Intrinsic Folding Propensity\, and Solvent Effects in Shaping Peptide Secondary Structures and their Functional Implications. - ( Aloke Das/ LCAR / Seminar). - 18/06/2026\, 11H
DESCRIPTION:Séminaire LCAR \nAloke Das\, Department of Chemistry\, Indian Institute of Science Education and Research (IISER) Pune\, India \nSummary :\nSecondary structures of peptides play a crucial role in shaping the overall three-dimensional architecture of proteins. The most common secondary structures found in peptides include α- helices\, β-sheets\, and turns. Among these\, turns are especially important because they reverse the direction of polypeptide chains\, thereby contributing to their compactness and stability. Turns are categorized into types such as C7 (γ-turn)\, C10 (β-turn)\, and C13 (α-turn)\, depending on the specific hydrogen-bonded rings formed between residues in the backbone. Given that these structures are fundamentally local\, they can be effectively explored using small\, capped peptides\, which act as minimal models for understanding folding patterns in larger peptides and proteins. Among the twenty naturally occurring amino acids\, glycine (Gly) and proline (Pro) stand out due to their distinct conformational characteristics: glycine\, which lacks a side chain\, is the most flexible\, whereas proline\, featuring a cyclic imino group\, is highly conformationally constrained. Importantly\, the -Pro-Gly- sequence tends to favor a β-turn conformation\, which is commonly found in the loop regions of β-hairpins. \nIn this presentation\, I will discuss our detailed investigation of Pro-Gly containing capped PGX tripeptides (X = A\, L\, V\, I) using a combination of FTIR spectroscopy\, 2D-NMR\, CD\, gas-phase laser spectroscopy\, single-crystal X-ray diffraction (XRD)\, and quantum chemical computations.1-5 Our study shows that PGA and PGL adopt a double β-turn structure across solid\, solution\, and gas phases\, while PGV and PGI prefer an extended β-strand conformation in the solid and solution states but retain a double β-turn structure in the gas phase. These observations emphasize the subtle interplay between the inherent conformational tendencies of amino acid residues\, sequence\, and solvent effects in determining peptide folding motifs. Notably\, the crystallization of these peptides in non-centrosymmetric space groups highlights their potential as functional materials with piezoelectric\, ferroelectric\, and nonlinear optical properties\, thereby linking peptide structural chemistry with materials design.
URL:https://fermi.univ-tlse3.fr/event/interplay-of-amino-acid-sequence-intrinsic-folding-propensity-and-solvent-effects-in-shaping-peptide-secondary-structures-and-their-functional-implications-aloke-das-lcar-seminar-18-06-2/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCAR,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260618T110000
DTEND;TZID=Europe/Paris:20260618T110000
DTSTAMP:20260609T122526Z
CREATED:20260607T122407Z
LAST-MODIFIED:20260609T122526Z
UID:12344-1781780400-1781780400@fermi.univ-tlse3.fr
SUMMARY:Glaciers. Sentinelles du changement climatique .  - (Etienne Berthier / CEMES /  Seminar). - 18/06/2026\, 11H
DESCRIPTION:Séminaire du Jeudi\, CEMES \nEtienne Berthier Glaciologue CNRS au Laboratoire d’Études en Géophysique et Océanographie Spatiales (LEGOS)\, Observatoire Midi-Pyrénées\n \nCEMES\, 18/06/2026\, 11H00 \nRésumé :\nCorde\, crampons\, piolets\, … et désormais les images à très haute résolution des satellites. Les glaciologues déploient une vaste panoplie de moyens pour étudier ces malades\, les glaciers\, au chevet desquels ils sont penchés. Souvent nichés au cœur de contrées reculées\, les glaciers subissent de plein fouet l’effet des dérèglements climatiques. Cette conférence permettra de voyager à travers les grandes régions glaciaires pour prendre conscience de l’impact des activités humaines sur l’état de santé des glaciers de la planète et comprendre les impacts sur les écosystèmes et nos sociétés. Nous verrons notamment comment les observations depuis l’espace permettent aujourd’hui un suivi exhaustif et régulier des plus de 200000 glaciers sur Terre. \nLien web :  https://rendez-vous.renater.fr/Seminaire_du_Jeudi_Etienne_Berthier_f5b64b-ac5f67-c00e91
URL:https://fermi.univ-tlse3.fr/event/glaciers-sentinelles-du-changement-climatique-michel-chabanne-cemes-seminar-18-06-2026-11h/
LOCATION:salle de conférence du CEMES\, CEMES - 29\, rue Jeanne Marvig BP 94347\, Toulouse\, 31055\, France
CATEGORIES:CEMES,Events,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260614T140000
DTEND;TZID=Europe/Paris:20260614T150000
DTSTAMP:20260609T080617Z
CREATED:20260608T085043Z
LAST-MODIFIED:20260609T080617Z
UID:12120-1781445600-1781449200@fermi.univ-tlse3.fr
SUMMARY:Bâtonnets quantiques : un modèle minimal de gaz quantique fortement corrélé. - (Miłosz Panfil / LPT / Seminar). -16/06/2026\, 14H
DESCRIPTION:Séminaire LPT \nMiłosz Panfil (Université de Varsovie) \nSeminar LPT\, 16/06/2026\, 14H\, 3R4\, salle de conférence \nSummary :\nThis talk addresses the quest for a minimal model capable of describing strongly correlated quantum matter. Specifically\, we seek a model exhibiting complex behavior that cannot be explained by free dynamics\, but which can at the same time be treated exactly. In this talk\, I will describe such a model: the quantum gas of hard rods. I will discuss the computation of its dynamic structure factor and its quench dynamics. Additionally\, I will explore the underlying quantum integrability of the model and its connection to the more renowned Lieb-Liniger model.
URL:https://fermi.univ-tlse3.fr/event/tba-milosz-panfil-lpt-seminar-02-06-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260609T140000
DTEND;TZID=Europe/Paris:20260609T153000
DTSTAMP:20260609T080605Z
CREATED:20260609T063042Z
LAST-MODIFIED:20260609T080605Z
UID:11969-1781013600-1781019000@fermi.univ-tlse3.fr
SUMMARY:Exploring hydrogen and hydrogen-rich compounds by quantum Monte Carlo. - (Michele Casula / LPT / Seminar). -9/06/2026\, 14H
DESCRIPTION:Séminaire LPT \nMichele Casula (IMPMC) \nSeminar LPT\, 9/06/2026\, 14H\, 3R4\, salle de conférence \nSummary :\nQuantum Monte Carlo (QMC) offers a unique framework to compute accurate potential energy surfaces upon which nuclear dynamics takes place. Both electronic and nuclear degrees of freedom are fundamental ingredients to determine phase stability and structural properties\, particularly in compounds bearing light elements such as hydrogen\, strongly affected by nuclear quantum effects. In this talk\, I will present some progress in combining quantum Monte Carlo with nuclear dynamics\, via classical and path integral molecular dynamics\, either by direct calculation of nuclear forces or by the derivation of machine learning potentials trained on QMC data [1]. I will discuss some applications to hydrogen [2]\, hydrides [3] and water clusters [4]\, where the quantum nature of both electrons and nuclei leads to original physics. \n\n[1] Physical Review B 110\, L041107 (2024)\, Journal of Chemical Theory and Computation 21\, 9335 (2025)\n[2] Nature Physics 19\, 845-850 (2023)\n[3] npj Computational Materials 10\, 56 (2024)\, arXiv:2602.00833\n[4] Nature Communications 14\, 6930 (2023)
URL:https://fermi.univ-tlse3.fr/event/tba-michele-casula-lpt-seminar-9-06-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T140000
DTEND;TZID=Europe/Paris:20260604T150000
DTSTAMP:20260601T090003Z
CREATED:20260601T064454Z
LAST-MODIFIED:20260601T090003Z
UID:12285-1780581600-1780585200@fermi.univ-tlse3.fr
SUMMARY:Electric excitation of spin resonance in altermagnetic and  antiferromagnetic conductors. -  ( Revaz Ramazashvili /  LNCMI / Seminar). - 4/06/2026\, 14H
DESCRIPTION:Seminar LNCMI \n Revaz Ramazashvili \,LPT \nSeminar LNCMI\, 4/06/2026\, 14H\,  Lieu : LNCMI\,Toulouse \nAbstract\nWe predict electric-dipole spin resonance (EDSR) in altermagnetic conductors: in a magnetic field H\, perpendicular to the magnetization\naxis\, an AC electric field will induce spin resonance transitions that\, in sufficiently clean samples\, shall be clearly visible on the ohmic\nbackground. The EDSR signal shall have a lower threshold frequency ω_ = 2H and a 1/√(ω-ω_) divergence above this threshold. \nDisorder cuts off this divergence; the resulting height of the threshold resonance peak shall scale as √(Hτ)\, with τ the relaxation time. \nI also hope to discuss how EDSR can serve as a diagnostic of altermagnetic order in conducting materials and as a means to distinguish it from more familiar\,\nhigher-symmetry forms of Néel order. \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/electric-excitation-of-spin-resonance-in-altermagnetic-and-antiferromagnetic-conductors-revaz-ramazashvili-lncmi-seminar-4-06-2026-14h/
LOCATION:Salle de seminaire du LNCMI\, Champs Magnétiques Pulsés\, 143 avenue de Rangueil\, Toulouse\, France
CATEGORIES:Events,LNCMI,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260602T140000
DTEND;TZID=Europe/Paris:20260602T150000
DTSTAMP:20260601T085955Z
CREATED:20260601T080046Z
LAST-MODIFIED:20260601T085955Z
UID:12117-1780408800-1780412400@fermi.univ-tlse3.fr
SUMMARY:Route vers l'observation expérimentale de la multifractalité et universalité KPZ dans la localisation d'Anderson en dimension deux. - (Noam Izem / LPT / These). -02/06/2026\, 14H
DESCRIPTION:Soutenance de thèse \nNoam Izem LPT\, Salle de conférence\, Bat. 3R4 – 14 H \n\nRésumé :\n« La localisation d’Anderson est un phénomène découvert en 1958 par P. W. Anderson dont le principe repose sur les multiples interférences d’une onde cohérente dans un milieu désordonné. Lorsque le désordre est suffisamment fort\, le transport quantique peut être complètement supprimé par ces interférences. Si il existe un grand nombre de résultats exacts en dimension une\, le régime de fort désordre en dimension deux reste difficile d’accès analytiquement. Il existe cependant une approximation dans ce régime\, qui permet de tisser une analogie avec une physique très différente\, l’universalité de Kardar-Parisi-Zhang (KPZ). Dans cette thèse on se propose d’approfondir ce lien en étudiant directement les états propres localisés en dimension deux\, jamais étudiés sous le prisme de l’universalité KPZ. \nUne autre direction de la thèse consiste à proposer une route vers l’observation expérimentale de la multifractalité dans les systèmes d’atomes froids. La multifractalité est une phase intrigante de la matière\, apparaissant notamment à la transition d’Anderson en dimension supérieure à deux\, et est très difficile à observer. Dans cette thèse\, on propose une route pour observer des signatures expérimentales d’une multifractalité contrôlable dans des systèmes d’atomes froids. » \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/tba-noam-izem-lpt-seminar-02-06-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LPT
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260529T110000
DTEND;TZID=Europe/Paris:20260529T123000
DTSTAMP:20260522T083152Z
CREATED:20260520T072641Z
LAST-MODIFIED:20260522T083152Z
UID:12240-1780052400-1780057800@fermi.univ-tlse3.fr
SUMMARY:The search of efficient light: Past\, Present\, Future - (Claude WEISBUCH / Seminar / SFP). - 29/05/2026\, 11H
DESCRIPTION:Séminaire SFP \nClaude WEISBUCH Université de Californie et de l’École polytechnique \nThe search of efficient light: Past\, Present\, Future \n 
URL:https://fermi.univ-tlse3.fr/event/the-search-of-efficient-light-past-present-future-claude-weisbuch-seminar-sfp-29-05-2026-11h/
LOCATION:salle de séminaires au Dépt de Génie Physique de l’INSA\, 2ème
CATEGORIES:Events,Seminars,SFP / SFC
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2026/05/SFP_Weisbuch_29mai26.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260528T140000
DTEND;TZID=Europe/Paris:20260528T153000
DTSTAMP:20260522T072941Z
CREATED:20260521T072530Z
LAST-MODIFIED:20260522T072941Z
UID:12234-1779976800-1779982200@fermi.univ-tlse3.fr
SUMMARY:Microwave-optical conversion via Rydberg excitons. - ( Liam Gallagher / LPCNO / Seminar). - 28/05\, 14H
DESCRIPTION:Séminaire du LPCNO \nLiam Gallagher\, Durham University\, UK \nSeminar LPCNO\, 28/05/2026\, 14H
URL:https://fermi.univ-tlse3.fr/event/microwave-optical-conversion-via-rydberg-excitons-liam-gallagher-lpcno-seminar-16-04-2026-14h/
LOCATION:Salle 220\, LPCNO\, INSA – LPCNO : 135 avenue de Rangueil\, toulouse\, 31077\, France
CATEGORIES:Events,LPCNO,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260526T140000
DTEND;TZID=Europe/Paris:20260526T150000
DTSTAMP:20260522T083425Z
CREATED:20260522T064321Z
LAST-MODIFIED:20260522T083425Z
UID:12114-1779804000-1779807600@fermi.univ-tlse3.fr
SUMMARY:Fermi-Hubbard SU(N) et au-delà : brisure de la symétrie ZL dans des boîtes quantiques à température nulle et finie. - (Loïc Herviou / LPT / Seminar). -26/05/2026\, 14H
DESCRIPTION:Séminaire LPT \nLoïc Herviou (LPMMC) \nSeminar LPT\, 26/05/2026\, 14H\, 3R4\, salle de conférence \nSummary\nLarge symmetries are both a curse (larger Hilbert space) and a boon (large irreducible representations) for numerical studies.\nIn this presentation\, I will discuss the method introduced by T. Botzung and P. Nataf in Phys. Rev. Lett. 132 (2023) to tackle optimally Fermi-Hubbard models with SU(N) symmetries. I will exemplify the drastic speedups in an unconventional thermodynamic limit of both large number of colors and particles\, and small number of sites. Using a combination of numerical simulations and analytical computation\, we get the exact\, finite and zero temperature\, phase diagrams with systems including several thousand particles.\nIf time allows\, we will discuss generalization of this approach to other Lie groups and models.
URL:https://fermi.univ-tlse3.fr/event/tba-loic-herviou-lpt-seminar-26-05-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260522T140000
DTEND;TZID=Europe/Paris:20260522T153000
DTSTAMP:20260522T090126Z
CREATED:20260522T090057Z
LAST-MODIFIED:20260522T090126Z
UID:12254-1779458400-1779463800@fermi.univ-tlse3.fr
SUMMARY:Harnessing AI to perform multidimensional sensing in experiments with quantum degenerate atoms. - (Murray Holland/ LCAR / Seminar). - 22/05/2026\, 14H
DESCRIPTION:Séminaire LCAR \nMurray Holland\, University of Colorado Boulder – JILA
URL:https://fermi.univ-tlse3.fr/event/harnessing-ai-to-perform-multidimensional-sensing-in-experiments-with-quantum-degenerate-atoms-murray-holland-lcar-seminar-22-06-2026-14h/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LCAR,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260512T140000
DTEND;TZID=Europe/Paris:20260512T150000
DTSTAMP:20260422T070538Z
CREATED:20260412T083744Z
LAST-MODIFIED:20260422T070538Z
UID:11992-1778594400-1778598000@fermi.univ-tlse3.fr
SUMMARY:Dynamique quantique de la chiralité d’une paroi de domaine magnétique mésoscopique. - (Oleksiy Kolezhuk / LPT / Seminar). - 12/05/2026\, 14H
DESCRIPTION:Séminaire LPT \nOleksiy Kolezhuk\, (Institut du Magnétisme\, ANS\, Ukraine) \nSeminar LPT\, 12/05/2026\, 14H\, 3R4\, salle de conférence \nSummary\nWe study the quantum dynamics of the internal chirality degree of freedom of a mesoscopic domain wall pinned inside a quasi-one-dimensional fixture. It is shown that weak spin-polarized current excites Bloch oscillations of the domain wall angular rotation velocity\, with the oscillation frequency proportional to the current\, modulated by a much higher magnon-range frequency. In addition to that\, the Wannier-Stark localization effects enable controlled switching between different chiral states\, suppressing inertial effects characteristic for the classical regime. \nThe current density required for the chirality manipulation can be significantly lower compared to the classical regime. We also show that for recently discovered novel class of magnetic materials — altermagnets — chirality switching can be driven by the usual (non-spin-polarized)\ncurrent. \n[1] O. Kolezhuk\, R. Teslia\, I. Buryak\, and O. Gomonay\, Phys. Rev. B 109\, 134418 (2024)
URL:https://fermi.univ-tlse3.fr/event/dynamique-quantique-de-la-chiralite-dune-paroi-de-domaine-magnetique-mesoscopique-oleksiy-kolezhuk-lpt-seminar-12-05-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260507T110000
DTEND;TZID=Europe/Paris:20260507T123000
DTSTAMP:20260504T072350Z
CREATED:20260503T074751Z
LAST-MODIFIED:20260504T072350Z
UID:12083-1778151600-1778157000@fermi.univ-tlse3.fr
SUMMARY:Existing experiments suffice to indirectly verify the quantum essence of gravity. - ( Martin Plavala/ LCAR / Seminar). - 7/05/2026\, 11H
DESCRIPTION:Séminaire LCAR \nMartin Plavala\,  Institut für Theoretische Physik\, Leibniz Universität Hannover\, Hannover\, Germany \nSummary\nThe gravity-mediated entanglement experiments employ concepts from quantum information to argue that if entanglement due to gravitational interaction is observed\, then gravity cannot be described by a classical system. However\, the proposed experiments remain beyond out current technological capability\, with optimistic projections placing the experiment outside of short-term future. Here we argue that current matter-wave interferometers are sufficient to indirectly prove that gravitational interaction creates entanglement between two systems. Specifically\, we prove that if we experimentally verify the Schrödinger equation for a single delocalized system interacting gravitationally with an external mass\, then\, under one of two reasonable assumptions\, the time evolution of two delocalized systems will lead to gravity-mediated entanglement.
URL:https://fermi.univ-tlse3.fr/event/existing-experiments-suffice-to-indirectly-verify-the-quantum-essence-of-gravity-martin-plavala-lcar-seminar-7-05-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCAR,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260507T110000
DTEND;TZID=Europe/Paris:20260507T120000
DTSTAMP:20260504T072537Z
CREATED:20260503T083622Z
LAST-MODIFIED:20260504T072537Z
UID:12109-1778151600-1778155200@fermi.univ-tlse3.fr
SUMMARY:Réseaux de tenseurs pour des géométries arbitraires : applications aux systèmes frustrés et à la simulation de circuits quantiques. - (Saeed Jahromi / LPT / Seminar). -7/05/2026\, 14H
DESCRIPTION:Séminaire LPT \nSaeed Jahromi (IASBS) \nSeminar LPT\, 7/05/2026\, 11H\, 3R4\, salle de conférence \nSummary\nIn this talk\, I will present recent advances in tensor network (TN) methods for the accurate simulation of quantum many-body systems on arbitrary geometries. In particular\, I will discuss how to overcome the challenges of applying TN methods to different lattice structures and dimensions. I will then present three representative applications: (i) the Heisenberg antiferromagnet on the square–kagome lattice\, where frustration stabilizes nontrivial valence-bond crystal phases\, (ii) the Kitaev–Heisenberg model on the bilayer honeycomb lattice\, highlighting competing magnetic and quantum spin liquid phases\, and (iii) tensor-network-based simulation of quantum circuits relevant to recent IBM experiments.
URL:https://fermi.univ-tlse3.fr/event/tba-csaeed-jahromi-lpt-seminar-7-05-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260505T140000
DTEND;TZID=Europe/Paris:20260505T153000
DTSTAMP:20260504T072414Z
CREATED:20260504T075434Z
LAST-MODIFIED:20260504T072414Z
UID:12085-1777989600-1777995000@fermi.univ-tlse3.fr
SUMMARY:Comment la géométrie et la topologie rendent les matériaux rigides… ou étonnamment souples. - (Christian D Santangelo / LPT / Seminar). -5/05/2026\, 14H
DESCRIPTION:Séminaire LPT \nChristian D Santangelo (Université de Syracuse) \nSeminar LPT\, 5/05/2026\, 14H\, 3R4\, salle de conférence\n\nSummary\nThe materials of biology\, from sharkskin to cartilage to wood\, regularly out-perform their synthetic equivalents. Organisms can achieve this because their materials have precise geometric structures that endow them with tailored mechanical properties that can often be changed in situ. It has recently become possible to fabricate comparable structures\, but we still seem to understand little about how geometry and mechanics are intertwined. \nThis talk will discuss why this is a hard problem (NP-hard actually)\, and highlight new work by my group and collaborators that are starting to unveil new connections between geometry and mechanics. This new understanding has allowed us to design materials that can change their mechanical properties\, changing from rigid to floppy due to the imposition of internal stresses.
URL:https://fermi.univ-tlse3.fr/event/tba-christian-d-santangelo-lpt-seminar-5-05-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260505T110000
DTEND;TZID=Europe/Paris:20260505T123000
DTSTAMP:20260504T072023Z
CREATED:20260504T072023Z
LAST-MODIFIED:20260504T072023Z
UID:12229-1777978800-1777984200@fermi.univ-tlse3.fr
SUMMARY:An optical lattice clock with a bosonic isotope of mercury. - (Ashley BEGUIN / LCAR / Seminar). - 5/05/2026\, 11H
DESCRIPTION:Séminaire LCAR \nAshley BEGUIN\, LTE\, Observatoire de Paris\, Université PSL\, Sorbonne Université\, Université de Lille\, LNE \nSummary\nSince 1967\, time has been defined through atomic transition frequencies\, establishing atomic clocks as fundamental tools for science and technology. More recently\, optical atomic clocks have surpassed historical atomic microwave clocks\, reaching uncertainties close to 10⁻¹⁸ and enabling both applied and fundamental investigations. At this level of performance\, atomic clocks serve as sensitive probes for a wide range of applications\, such as chronometric geodesy\, tests of General Relativity\, searches for physics beyond the Standard Model\, and the prospective redefinition of the SI second [1]. In addition\, frequency ratio measurements would provide powerful tools to constrain possible variations of fundamental constants\, such as the fine-structure constant α and the proton-to-electron mass ratio [2]. \nAmong neutral atoms\, mercury offers several attractive features for an optical lattice clock\, including a low sensitivity to blackbody radiation—16 times lower than ytterbium and 30 times lower than strontium—and a relatively high vapor pressure at room temperature. To date\, only the fermionic isotope ¹⁹⁹Hg has been used in mercury clocks. However\, the limited lifetime of its excited state constrains the performance achievable with the next generation of ultrastable lasers. In contrast\, bosonic isotopes offer a way to overcome this limitation\, as they allow for much longer interrogation times\, with the normally forbidden ¹S₀–³P₀ transition made accessible through a quenching scheme using a strong external magnetic field [3]. \nHere\, we present the first ¹⁹⁸Hg optical lattice clock and its comparison with a local state-of-the-art ⁸⁷Sr optical lattice clock. This clock is estimated to operate with a relative frequency stability already as low as 6 × 10⁻¹⁶/√(τ/s)\, and the 198Hg/87Sr optical frequency ratio could be determined for the first time with a preliminary total relative systematic uncertainty of 6.9 × 10⁻¹⁶ [4]. With this magnetically induced transition\, both the quadratic Zeeman shift (QZS) and the probe light shift (PLS) play indeed a significant role in the total uncertainty budget. Careful calibration and optimized experimental conditions can reduce the QZS uncertainty below the 10⁻¹⁷ level\, whereas the PLS remains a major limitation under our current experimental setup. We are now working on implementing hyper-Ramsey interrogation [5] to suppress the PLS uncertainty to lower levels. Future steps will focus on further improving the clock stability by employing repumping techniques for normalized detection and achieving lower atomic temperatures through a sideband cooling scheme. \n\n[1] W. F. McGrew et al\, Nature\, 564\, 87 (2018). A. D. Ludlow et al\, Rev. Mod. Phys.\, 87\, 637 (2015). S. Bize\, Comptes Rendus Physique\, 20\, 153 (2019).\n[2] Uzan J.P.\, Living Rev. Relativ. 14 (2011) 2.\n[3] A. V. Taichenachev et al\, Phys. Rev. Lett.\, 96\, 083001 (2006).\n[4] C. Zyskind\, et al.\, arXiv:2512.04920 (2025).\n[5] V. I. Yudin\, et al.\, Phys. Rev. A 82\, 011804(R) (2010).
URL:https://fermi.univ-tlse3.fr/event/an-optical-lattice-clock-with-a-bosonic-isotope-of-mercury-ashley-beguin-lcar-seminar-5-05-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCAR,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260428T140000
DTEND;TZID=Europe/Paris:20260428T150000
DTSTAMP:20260422T070708Z
CREATED:20260420T070425Z
LAST-MODIFIED:20260422T070708Z
UID:12189-1777384800-1777388400@fermi.univ-tlse3.fr
SUMMARY:Stockage et transmission de l’information sous bruit markovien. - (Satvik Singh / LPT / Seminar). - 28/04/2026\, 14H
DESCRIPTION:Séminaire LPT \nSatvik Singh\, (Université technique de Munich) \nSeminar LPT\, 28/04/2026\, 14H\, 3R4\, salle de conférence \nSummary\nThis talk is about estimating the quantum and classical capacities of quantum Markov semigroups acting on finite-dimensional quantum systems. We show that in the limit of infinite time\, the capacities can be efficiently computed in terms of the structure of the peripheral space of the semigroup\, are strongly additive\, and satisfy the strong converse property. We also establish convergence bounds to show that the infinite-time capacities are reached after time scaling quadratically with the system dimension. From the perspective of data storage\, our analysis provides tight bounds on the number of bits or qubits that can be reliably stored for long times in a quantum memory device that is experiencing Markovian noise. From the perspective of point-to-point communication between two spatially separated parties\, our analysis provides efficiently computable bounds on the optimal rate at which bits or qubits can be reliably transmitted via ‘long’ Markovian communication channels\, both in the finite block-length and asymptotic regimes. In order to keep the talk more accessible\, I will begin with a brief introduction on the subject of quantum channel capacities.
URL:https://fermi.univ-tlse3.fr/event/stockage-et-transmission-de-linformation-sous-bruit-markovien-satvik-singh-lpt-seminar-28-04-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260424T110000
DTEND;TZID=Europe/Paris:20260424T123000
DTSTAMP:20260422T070504Z
CREATED:20260421T121320Z
LAST-MODIFIED:20260422T070504Z
UID:12155-1777028400-1777033800@fermi.univ-tlse3.fr
SUMMARY:Rouler plus vite grâce à la physique ? - (Philippe ODIER / Seminar / SFP). - 24/04/2026\, 11H
DESCRIPTION:Séminaire SFP \nPhilippe ODIER ENS Lyon\, Salle de Conférence\, Bât. 3R4 \nAffiche Rouler plus vite grâce à la physique ? \n 
URL:https://fermi.univ-tlse3.fr/event/rouler-plus-vite-grace-a-la-physique-philippe-odier-seminar-sfp-24-04-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,Seminars,SFP / SFC
ATTACH;FMTTYPE=image/jpeg:https://fermi.univ-tlse3.fr/wp-content/uploads/2026/04/AFFICHE_SFP_Odier_24_04_2026.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260423T140000
DTEND;TZID=Europe/Paris:20260423T150000
DTSTAMP:20260422T065723Z
CREATED:20260422T065723Z
LAST-MODIFIED:20260422T065723Z
UID:12186-1776952800-1776956400@fermi.univ-tlse3.fr
SUMMARY:The Status of Axion Dark Matter Searches and the Next Frontier. -  ( Yannis K. Semertzidis /  LNCMI / Seminar). - 23/04/2026\, 14H
DESCRIPTION:Seminar LNCMI \nYannis K. Semertzidis\, Korea Advanced Institute of Science and Technology (KAIST) in Daejeon \nSeminar LNCMI\, 23/04/2026\, 14H\, LNCMI\,Visio \nAbstract\nOver the past decade\, axion dark matter searches have made substantial progress\, with resonant haloscope experiments probing well-motivated regions of parameter space at unprecedented sensitivity. Advances in high-Q cavities\, quantum-limited amplifiers\, and optimized scanning strategies have enabled leading experiments to approach\, and in some cases reach\, key theoretical benchmarks. \nExtending this sensitivity to higher frequencies\, however\, remains a central challenge. As cavity volumes decrease and technical demands increase\, the experimental figure of merit B^2 V becomes the dominant limiting factor in achievable signal power. In this regime\, access to large magnetic fields over significant volumes is not simply advantageous—it is decisive. \nProf. Semertzidis will review the current experimental landscape and discuss emerging directions aimed at the sub-GHz and tens-of-GHz range with theoretically motivated sensitivities. In particular\, he will highlight how facilities that already meet the most demanding B^2 V requirements are uniquely positioned to lead this effort\, provided that complementary detection capabilities are developed in parallel. This combination offers a realistic and timely path toward exploring a largely uncharted region of axion parameter space with competitive sensitivity. \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1
URL:https://fermi.univ-tlse3.fr/event/the-status-of-axion-dark-matter-searches-and-the-next-frontier-yannis-k-semertzidis-lncmi-seminar-23-04-2026-14h/
LOCATION:Visio
CATEGORIES:Events,LNCMI,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260420T133000
DTEND;TZID=Europe/Paris:20260420T170000
DTSTAMP:20260416T121550Z
CREATED:20260416T081555Z
LAST-MODIFIED:20260416T121550Z
UID:12102-1776691800-1776704400@fermi.univ-tlse3.fr
SUMMARY:Interférométrie atomique à très grand transfert d'impulsion fondée sur l'approche de Floquet. - (Léo Calmels / LCAR / Thèse). - 20/04/2026\, 13H30
DESCRIPTION:Soutenance de thèse \nLéo Calmels\, LCAR\, Salle de conférence\, Bat. 3R4 – 13H30 \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/interferometrie-atomique-a-tres-grand-transfert-dimpulsion-fondee-sur-lapproche-de-floquet-leo-calmels-lcar-these-20-04-2026-13h30/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCAR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260416T140000
DTEND;TZID=Europe/Paris:20260416T153000
DTSTAMP:20260416T121540Z
CREATED:20260416T112808Z
LAST-MODIFIED:20260416T121540Z
UID:11988-1776348000-1776353400@fermi.univ-tlse3.fr
SUMMARY:TS-Free Prediction of Activation Strain Components of Diels–Alder Reactions with Graph Neural Networks. - ( Daiann Sosa Carrizo / LPCNO / Seminar). - 16/04/2026\, 14H
DESCRIPTION:Séminaire du LCPQ \nDaiann Sosa Carrizo\, LPCNO \nSeminar LCPQ\, 16/04/2026\, 14H \nSummary :\nMachine learning is transforming computational chemistry. From predicting molecular properties — solubility\, spectroscopic\, and drug-likeness — to guiding retrosynthetic planning and catalyst design\, ML models have progressively replaced expensive quantum-chemical calculations with fast\, learned approximations. Yet some class of properties has remained largely out of reach: those that encode transition-state geometry.[1]\nThe Activation Strain Model (ASM) decomposes activation barriers into fragment deformation energies (ΔE‡_strain) and interfragment interaction energy (ΔE‡_int)\, explaining why a reaction is fast or slow rather than merely predicting trends. Computing these quantities requires explicit DFT transition-state optimisation — costly and incompatible with high-throughput screening.[2-3]\nIn this seminar\, I will discuss the application of the directed message-passing neural network (Dual D-MPNN) to predict ASM components from reactant SMILES\, without TS optimisation or hand-crafted descriptors. The model was trained on 802 endo Diels–Alder reactions computed at the M06-2X/6-311+G(d\,p) level of theory.[4] \nError analysis reveals a chemically interpretable result: diene conformational rigidity\, not electronic complexity\, is the primary determinant of model accuracy. Rigid heteroaromatic dienes such as furans are predicted near chemical accuracy\, while flexible hetero-acyclic dienes bearing conjugated carbonyl groups remain the principal failure mode. This is not an architectural limitation — it reflects a fundamental constraint of 2D molecular graphs\, which cannot encode the conformational ambiguity that determines TS geometry in flexible systems. \nAs a prospective application\, this model will be used to screen virtual diene libraries and identify reactive candidates for Diels–Alder reactions targeting terpenoid and alkaloid natural products. In these systems\, the ASM decomposition provides design principles — distinguishing strain-controlled from interaction-controlled reactivity — that barrier heights alone cannot offer. \n\n[1]. Chen\, X. et al. Nat. Synth. 2025\, 4\, 877–887.\n[2] Bickelhaupt\, F. M. et al. Angew. Chem. Int. Ed. 2017\, 56\, 10070–10086\n[3] Brunard\, E. et al. J. Am. Chem. Soc. 2024\, 146\, 5843–5854.\n[4] Vargas\, S. et al. J. Chem. Theory Comput. 2021\, 17\, 6098–6110.
URL:https://fermi.univ-tlse3.fr/event/ts-free-prediction-of-activation-strain-components-of-diels-alder-reactions-with-graph-neural-networks-daiann-sosa-carrizo-lpcno-seminar-2-02-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCPQ,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260416T110000
DTEND;TZID=Europe/Paris:20260416T123000
DTSTAMP:20260414T085115Z
CREATED:20260414T082435Z
LAST-MODIFIED:20260414T085115Z
UID:12105-1776337200-1776342600@fermi.univ-tlse3.fr
SUMMARY:Quantum key distribution: an information-theoretic view. - ( Meryem BENAMMAR / LCAR / Seminar). - 16/04/2026\, 11H
DESCRIPTION:Séminaire LCAR \nMeryem BENAMMAR\,  Institut Supérieur de l’Aéronautique et de l’Espace (ISAE)\, Toulouse  \nSummary\nWith the ever-growing need for secure communication links\, and the rapid evolving of quantum computing\, secret key generation has become a corner stone in the design of modern communication networks. Quantum key distribution (QKD) is one of the effective approaches for secret key generation under a quantum computing threat\, since its security stems from quantum mechanics (physics) and not from computational hardness of some mathematical problem. Hence\, QKD falls under the so-called physical layer secret key generation. While secret key generation from classical physical sources is well established in the information-theoretic literature since the seventies\, secret key generation from quantum sources is\, in turn\, more challenging to analyze from an information-theoretic perspective due to intrinsic differences between classical and quantum information processing tools. In this talk\, based on a simple BB84 protocol\, we describe an information theoretical framework to analyze and design QKD schemes by resorting to tools and results of quantum information theory\, while highlighting the main differences with classical secret key generation.
URL:https://fermi.univ-tlse3.fr/event/quantum-key-distribution-an-information-theoretic-view-meryem-benammar-lcar-seminar-16-04-2026-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCAR,Seminars
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DTSTART;TZID=Europe/Paris:20260416T103000
DTEND;TZID=Europe/Paris:20260416T120000
DTSTAMP:20260609T122212Z
CREATED:20260414T083059Z
LAST-MODIFIED:20260609T122212Z
UID:12107-1776335400-1776340800@fermi.univ-tlse3.fr
SUMMARY:"La Coordination Nationale de la Sécurité des Systèmes d'Information (CNSSI) et ses activités"  &  "Le Numérique\, un enjeu de souveraineté" .  - (Michel Chabanne / CEMES /  Seminar). - 16/04/2026\, 10H30
DESCRIPTION:Séminaire du Jeudi\, CEMES \nMichel Chabanne RSSI du CNRS\,\n \nCEMES\, 16/04/2026\, 10H30 \nLien web : https://visio.numerique.gouv.fr/bpw-acmf-gtt
URL:https://fermi.univ-tlse3.fr/event/la-coordination-nationale-de-la-securite-des-systemes-dinformation-cnssi-et-ses-activites-le-numerique-un-enjeu-de-souverainete-michel-chabanne-cemes-seminar-16-04-2026/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:CEMES,Events,Seminars
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