BEGIN:VCALENDAR VERSION:2.0 PRODID:-//FeRMI - ECPv6.15.20//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:FeRMI X-ORIGINAL-URL:https://fermi.univ-tlse3.fr X-WR-CALDESC:Évènements pour FeRMI REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Paris BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20250330T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20251026T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20260329T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20261025T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20270328T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20271031T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260402T140000 DTEND;TZID=Europe/Paris:20260402T153000 DTSTAMP:20260502T210051 CREATED:20260330T052823Z LAST-MODIFIED:20260330T123043Z UID:12091-1775138400-1775143800@fermi.univ-tlse3.fr SUMMARY:Investigating the electronic properties of two-dimensional heterostructures with optics and magneto-optics. - ( Elena Blundo / LNCMI / Seminar). - 2/04/2026\, 14H DESCRIPTION:Seminar LNCMI \nElena Blundo\, Walter Schottky Institute at the Technical University of Munich \nSeminar LNCMI\, 2/04/2026\, 14H\, LNCMI\,Visio \nAbstract\nIn the so-called layered materials\, the crystal layers are held together by weak van der Waals (vdW) interactions [1]. This has enabled the exfoliation of atomically-thin\, two-dimensional (2D) crystals\, opening the door to a burgeoning field of research. 2D materials open new opportunities for matter manipulation at the nanoscale\, far beyond what conventional covalent materials allow. vdW interactions enable the creation of heterostructures with unprecedented freedom in the choice of the materials and even in their rotational alignment. \nIn this seminar\, we will explore how assembling different vdW crystals (e.g.\, semiconducting transition metal dichalcogenides such as MoSe2 and WSe2) gives rise to entirely new materials. The opto-electronic properties of these 2D heterostructures differ strikingly from those of their constituent materials\, as interlayer interactions unlock the formation of new exciton states with distinct energy\, lifetime\, spin-valley selection rules\, and spatial confinement\, thereby affecting light absorption and emission. We will show how the system’s interaction with light—also in combination with high magnetic fields or electric fields—can be exploited to reveal the properties of these new electronic configurations [2\,3].Going beyond the fundamental physics of 2D heterostructures\, we will explore novel strategies to control and manipulate these electronic states\, e.g. through ferroelectricity [4] or ferromagnetism\,opening new pathways for precise material design and tuneable light emission. \nLien Zoom : https://univ-grenoble-alpes-fr.zoom.us/j/94228207316?pwd=khTdznxeFy1ZUYkYftQ0QSox6Fz3iK.1 \nReferences:\n[1] E. Blundo\, T. Yildirim\, G. Pettinari\, and A. Polimeni\, Experimental Adhesion energy in van der Waals crystals and heterostructures from atomically-thin bubbles\, Phys. Rev. Lett. 127\, 046101 (2021).\n[2] E. Blundo\, F. Tuzi\, S. Cianci\, M. Cuccu\, K. Olkowska-Pucko\, Ł. Kipczak\, G. Contestabile\, A. Miriametro\, M. Felici\, G. Pettinari\, T. Taniguchi\, K. Watanabe\, A. Babiński\, M. R. Molas\, and A. Polimeni\, Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2 heterostructures\, Nat. Commun. 15\, 1057 (2024).\n[3] P. Soubelet\, A. Delhomme\, E. Blundo\, A.V. Stier\, and J.J. Finley\, Polarons shape the interlayer exciton emission of MoSe2/WSe2 heterobilayers\, Nat. Commun. 16\, 8735 (2025).\n[4] J. Schwandt-Krause\, M. E. A. Miloudi\, E. Blundo\, S. Deb\, J.-N. Heidkamp\, K. Watanabe\, T. Taniguchi\, R. Schwartz\, A. Stier\, J. J. Finley\, O. Kühn\, and T. Korn\, Ferroelectric Control of Interlayer Excitons in 3R-MoS2 / MoSe2 Heterostructures\, Nano Lett. 26\, 214 (2026). URL:https://fermi.univ-tlse3.fr/event/investigating-the-electronic-properties-of-two-dimensional-heterostructures-with-optics-and-magneto-optics-elena-blundo-lncmi-seminar-2-04-2026-14h/ LOCATION:Visio CATEGORIES:Events,LNCMI,Seminars END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260407T140000 DTEND;TZID=Europe/Paris:20260407T150000 DTSTAMP:20260502T210051 CREATED:20260329T075454Z LAST-MODIFIED:20260330T075644Z UID:11803-1775570400-1775574000@fermi.univ-tlse3.fr SUMMARY:TBA. - (Gilles Parez / LPT / Seminar). -7/04/2026\, 14H DESCRIPTION:Séminaire LPT \nGilles Parez (LAPTh) \nSeminar LPT\, 7/04/2026\, 14H\, 3R4\, salle de conférence URL:https://fermi.univ-tlse3.fr/event/tba-gilles-parez-lpt-seminar-17-02-2026-14h/ LOCATION:Salle de conférence\, Bâtiment 3R4 CATEGORIES:Events,LPT,Seminars END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260416T103000 DTEND;TZID=Europe/Paris:20260416T120000 DTSTAMP:20260502T210051 CREATED:20260414T083059Z LAST-MODIFIED:20260414T085123Z 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 \nLein 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 END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260416T110000 DTEND;TZID=Europe/Paris:20260416T123000 DTSTAMP:20260502T210051 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 END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260416T140000 DTEND;TZID=Europe/Paris:20260416T153000 DTSTAMP:20260502T210051 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:20260423T140000 DTEND;TZID=Europe/Paris:20260423T150000 DTSTAMP:20260502T210051 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:20260424T110000 DTEND;TZID=Europe/Paris:20260424T123000 DTSTAMP:20260502T210051 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:20260428T140000 DTEND;TZID=Europe/Paris:20260428T150000 DTSTAMP:20260502T210051 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 END:VCALENDAR