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X-ORIGINAL-URL:https://fermi.univ-tlse3.fr
X-WR-CALDESC:Évènements pour FeRMI
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20240301T103000
DTEND;TZID=Europe/Paris:20240301T123000
DTSTAMP:20260421T234119
CREATED:20240228T065506Z
LAST-MODIFIED:20240229T090406Z
UID:10058-1709289000-1709296200@fermi.univ-tlse3.fr
SUMMARY:La police scientifique\, un retour d'expérience au delà des représentations. - (Julien BOULON /  Seminar / FeRMI). - 1/03/2024\, 10H30
DESCRIPTION:Séminaires d’ouverture FeRMI\n \nJulien BOULON\,   Ancien post doctorant au LCAR. Technicien en chef de PTS\, Adj. chef Département Criminalistique Numérique. Antenne Office Anti-Cybercriminalité – OFAC\nService Interdépartemental de Police Judiciaire de la Gironde  \nRésumé : \nSujet de nombreuses fictions\, la police scientifique est souvent représentée de manière erronée. Rançon d’un succès de studios hollywoodiens\, l’image qui y est associée est celle d’une entité complète\, disposant d’un panel d’outils techniques aboutis et d’une précision remarquable. Presque 10 ans après avoir intégré ce qu’on appelle dans le jargon « l’I.J. »\, je vous présenterai mon expérience dans cette branche de la police judiciaire. Les différentes unités dans lesquelles j’ai pu exercer ainsi que les besoins en développements scientifiques nécessaires à la poursuite de l’objectif de ce corps de métier : la manifestation de la vérité.
URL:https://fermi.univ-tlse3.fr/event/la-police-scientifique-un-retour-dexperience-au-dela-des-representations-julien-boulon-seminar-fermi-1-03-2024-10h30/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,FeRMIsem,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20240307T140000
DTEND;TZID=Europe/Paris:20240307T160000
DTSTAMP:20260421T234119
CREATED:20240304T090321Z
LAST-MODIFIED:20240305T123547Z
UID:10085-1709820000-1709827200@fermi.univ-tlse3.fr
SUMMARY:La Chimie en Flux Continu au Conservatoire National des Arts et Métiers  . - ( Catherine Gomez - Zacharias Amara / LPCNO / Seminar). - 7/03/2024\, 14H
DESCRIPTION:Catherine Gomez – Zacharias Amara\, GBCM\, Conservatoire National des Arts et Métiers\, Paris \nSéminaire LPCNO\, seminar room\, INSA\, Build. 27\, Room 2.20 (2nd floor left)
URL:https://fermi.univ-tlse3.fr/event/la-chimie-en-flux-continu-au-conservatoire-national-des-arts-et-metiers-catherine-gomez-zacharias-amara-lpcno-seminar-7-03-2024-14h/
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:20240312T140000
DTEND;TZID=Europe/Paris:20240312T160000
DTSTAMP:20260421T234119
CREATED:20240311T113441Z
LAST-MODIFIED:20240311T115801Z
UID:10118-1710252000-1710259200@fermi.univ-tlse3.fr
SUMMARY:Ground-state phases of the one-dimensional SU(N)-symmetric Kondo lattice model. - (Keisuke Totsuka / LPT / Seminar). - 12/03/2024\, 11 H.
DESCRIPTION:Keisuke Totsuka  (YITP\, Kyoto) \nSeminar LPT\, 12/03/2024\, 11H\, 3R4\, Conference hall \nSummary\nThe Kondo-lattice model and its variants (e.g.\, the Kondo-Heisenberg model)\, in which itinerant fermions interact with immobile magnetic moments via spin-exchange coupling (Kondo coupling)\, have been playing an important role in understanding the physics of heavy-fermion systems. In this talk\, I begin by quickly explaining how the SU(N) Kondo-lattice model\, in which the spin SU(2) symmetry is generalized to SU(N)\, is realized in actual physical systems (e.g.\, cold fermions and twisted bilayer graphene)\, and then I focus on the ground-state properties of its one-dimensional version. Specifically\, when the Kondo coupling is sufficiently large\, we find ferromagnetic metallic phases that can be established rigorously as well as several insulating ones. I also show that the SU(N) Kondo-lattice model provides a natural condensed-matter realization of supersymmetric [i.e.\, SU(N|1)] models. Various (insulating) phases at small Kondo coupling are then explored using the machinery of bosonization and various conformal field theory (CFT) techniques\, and the results are compared with the predictions of the Lieb-Schultz-Mattis-type (or anomaly-matching) argument. \n\n \n 
URL:https://fermi.univ-tlse3.fr/event/tba-keisuke-totsuka-lpt-seminar-12-03-2024-11-h/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20240321T110000
DTEND;TZID=Europe/Paris:20240321T123000
DTSTAMP:20260421T234119
CREATED:20240318T084658Z
LAST-MODIFIED:20240320T090618Z
UID:10158-1711018800-1711024200@fermi.univ-tlse3.fr
SUMMARY:Satellite Quantum Communications at Thales Alenia Space : Quantum Key Distribution and Quantum Internet. - (Laurent de Forge / LCAR / Seminar). - 21/03/2024\, 11H
DESCRIPTION:Laurent de Forge\,  Thales Alenia Space\, 26\, Avenue J-F Champollion\, 31037\, Toulouse\, France \nSéminaire LCAR – Jeudi 21 mars\, 11H. – Nouvelle Salle de conférence\, 3R4 \nSummary : \nI will present Satellite Quantum Communications at Thales Alenia Space. Our two main disruptive activities concern Quantum Key Distribution (QKD) for cryptography needs and the Quantum Internet that will connect quantum computers together at the horizon of 2035. QKD\, that provides the highest security level to secure our communications\, is a parade to the quantum computer threat. Firstly developed in Research Labs since 1984\, QKD is now an industrial topic of interest. I will explain why satellites are essential assets for the European QKD network we are developing for the European Commission with the European Space Agency. I will also explain how entangled photons and quantum teleportation will be used in the quantum internet. My talk will highlight the role of a theoretical quantum physicist in the Space Industry.
URL:https://fermi.univ-tlse3.fr/event/satellite-quantum-communications-at-thales-alenia-space-quantum-key-distribution-and-quantum-internet-laurent-de-forge-lcar-seminar-21-03-2024-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCAR,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20240326T140000
DTEND;TZID=Europe/Paris:20240326T153000
DTSTAMP:20260421T234119
CREATED:20240325T073856Z
LAST-MODIFIED:20240325T084658Z
UID:10120-1711461600-1711467000@fermi.univ-tlse3.fr
SUMMARY:Large-deviation analysis of rare resonances for the Many-Body localization transition. - (Marco Tarzia / LPT / Seminar). - 26/03/2024\, 14 H.
DESCRIPTION:Marco Tarzia (LPTMC) \nSeminar LPT\, 26/03/2024\, 14H\, 3R1\, seminar room\, 3rd floor \nAbstract :\nA central theoretical issue at the core of the current research on many-body localization (MBL) consists in characterizing the statistics of rare long-range resonances in many-body eigenstates. This is of paramount importance to understand : (i) the critical properties of the MBL transition and the mechanism for its destabilization through quantum avalanches ; (ii) the unusual transport and anomalously slow out-of-equilibrium relaxation when the transition is approached from the metallic side. In order to study and characterize such long-range rare resonances\, we develop a large-deviations approach based on an analogy with the physics of directed polymers in random media\, and in particular with their freezing glass transition on infinite-dimensional graphs. The basic idea is to enlarge the parameter space by adding an auxiliary parameter (which plays the role of the inverse temperature in the directed polymer formulation) which allows us to fine-tune the effect of anomalously large outliers in the far-tails of the probability distributions of the transmission amplitudes between far-away many-body configurations in the Hilbert space. We apply this approach to the study of a class of disordered quantum spin chains in a transverse field. This analysis shows the existence of a broad disorder range in which rare\, long-distance resonances\, that in finite-size systems may only form for a few specific realizations of the disorder and a few specific choice of the random initial state\, are expected to destabilize the MBL phase in the thermodynamic limit\, while the genuine MBL transition is shifted to much larger values of the disorder than originally thought.
URL:https://fermi.univ-tlse3.fr/event/large-deviation-analysis-of-rare-resonances-for-the-many-body-localization-transition-marco-tarzia-lpt-seminar-2-03-2024-14-h/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20240328T140000
DTEND;TZID=Europe/Paris:20240328T153000
DTSTAMP:20260421T234119
CREATED:20240324T115729Z
LAST-MODIFIED:20240325T084545Z
UID:10151-1711634400-1711639800@fermi.univ-tlse3.fr
SUMMARY:Integrated photonics for low-cost biosensing applications: design\, caracterization and technological challenges  . - ( Nicolas Gaignebet / LPCNO / Seminar). - 28/03/2024\, 14H
DESCRIPTION:Nicolas Gaignebet\, Thèse à l’INL à l’INSA Lyon et post-doc au CEA-Leti à Grenoble \nSéminaire LPCNO\, seminar room\, INSA\, Build. 27\, Room 2.20 (2nd floor left)
URL:https://fermi.univ-tlse3.fr/event/integrated-photonics-for-low-cost-biosensing-applications-design-caracterization-and-technological-challenges-nicolas-gaignebet-lpcno-seminar-28-03-2024-14h/
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:20240329T110000
DTEND;TZID=Europe/Paris:20240329T123000
DTSTAMP:20260421T234119
CREATED:20240323T084353Z
LAST-MODIFIED:20240325T084606Z
UID:10177-1711710000-1711715400@fermi.univ-tlse3.fr
SUMMARY:Propriétés thermiques des aimants quantiques frustrés. - (Frédéric Mila / LPT / Seminar). - 29/03/2024\, 11 H.
DESCRIPTION:Frédéric Mila (EPFL) \nSeminar LPT\, 29/03/2024\, 11H\, 3R1\, seminar room\, 3rd floor \nAbstract :\nThe thermal properties of frustrated quantum magnets are a real challenge because\, when formulated in the natural configuration basis\, Quantum Monte Carlo simulations suffer from a very serious minus sign problem that excludes simulations below temperatures of the order of the coupling constants. In this talk\, I will review recent numerical progress made on two fronts : (i) Quantum Monte Carlo simulations in the dimer basis [1]. In this basis\, there is no minus sign problem for fully frustrated models\, and simulations can be performed down to arbitrarily low temperature. With these simulations\, we have identified the presence of a thermal critical point terminating a line of first-order transitions in the fully frustrated bilayer model [1]. (ii) Tensor network simulations [2\,3]. Using ancilla spins and a partial trace\, the thermal ensemble can be accurately obtained by imaginary time evolution of a purified state\, leading to reliable results down to temperatures only a few percents of the coupling constants regardless of the level of frustration. Using this approach\, we have been able to show that the peak of the specific heat around 2 GPa and 4 K in SrCu2(BO3)2 is a thermal critical point akin to that of the fully frustrated bilayer [2]\, and to numerically verify the long-standing prediction that the spin-1/2 J1-J2 model on the square lattice has a thermal Ising transition for large enough J2/J1 [3]. \n[1] J. Stapmanns\, P. Corboz\, F. Mila\, A. Honecker\, B. Normand\, and S. Wessel\, Phys. Rev. Lett. 121\, 127201 (2018). \n[2] J. Larrea Jimenez\, S. P. G. Crone\, E. Fogh\, M. E. Zayed\, R. Lortz\, E. Pomjakushina\, K. Conder\, A. M. Läuchli\, L. Weber\, S. Wessel\, A. Honecker\, B. Normand\, Ch. Rüegg\, P. Corboz\, H. M. Ronnow and F. Mila\, Nature 592\, 370 (2021). \n[3] O. Gauthé and F. Mila\, Phys. Rev. Lett. 128\, 227202 (2022).
URL:https://fermi.univ-tlse3.fr/event/proprietes-thermiques-des-aimants-quantiques-frustres-frederic-mila-lpt-seminar-29-03-2024-11-h/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LPT,Seminars
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