{"id":11643,"date":"2025-09-02T10:28:23","date_gmt":"2025-09-02T08:28:23","guid":{"rendered":"https:\/\/fermi.univ-tlse3.fr\/?post_type=tribe_events&#038;p=11643"},"modified":"2025-09-03T14:14:03","modified_gmt":"2025-09-03T12:14:03","slug":"simulation-de-systemes-de-matiere-condensee-avec-des-ordinateurs-quantiques-lex-kemper-lpt-seminar-5-09-2025-11h","status":"publish","type":"tribe_events","link":"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/simulation-de-systemes-de-matiere-condensee-avec-des-ordinateurs-quantiques-lex-kemper-lpt-seminar-5-09-2025-11h\/","title":{"rendered":"Simulation de syst\u00e8mes de mati\u00e8re condens\u00e9e avec des ordinateurs quantiques. &#8211; (Lex Kemper \/ LPT \/ Seminar). &#8211; 5\/09\/2025, 11H"},"content":{"rendered":"<p><span style=\"font-size: 20px; background-color: #f18500;\">S\u00e9minaire LPT<\/span><\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"color: #191970;\"><strong>Lex Kemper <\/strong><\/span>(Universit\u00e9 d\u2019\u00c9tat de Caroline du Nord)<\/span><\/p>\n<p><span style=\"background-color: #cecece;\">Seminar LPT, 5\/09\/2025, 11H, 3R4, salle de conf\u00e9rence<\/span><\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"color: #191970;\"><strong>Summary <\/strong><\/span><br \/>\n<span style=\"font-size: 16px;\">In this talk, I\u2019ll present our recent advances in using quantum computers to simulate condensed matter systems, focusing on spectroscopic experiments in and out of equilibrium.<\/span><\/span><\/p>\n<p><span style=\"font-size: 16px;\">First, I\u2019ll introduce a linear response framework that directly connects experimental observables to quantum many-body states by computing bosonic and fermionic correlation functions on a quantum computer. Unlike prior methods, our approach supports multiple operators in a single circuit, enabling efficient and simultaneous extraction of various correlation functions without extra ancilla qubits. We demonstrate this on a charge-density-wave material using IBM\u2019s ibm_auckland device, showing robust results even on noisy hardware. This method streamlines spectroscopic simulations and opens new directions for improving classical approaches.<\/span><\/p>\n<p><span style=\"font-size: 16px;\">Second, I\u2019ll discuss simulating open quantum systems on noisy quantum hardware. We find that such systems are surprisingly robust to hardware errors\u2014even with deep circuits\u2014making them promising candidates for near-term simulations.<\/span><\/p>\n<p><span style=\"font-size: 16px;\">Together, this work demonstrates the feasibility and promise of quantum simulation for both equilibrium and non-equilibrium phenomena in complex materials.<\/span><\/p>\n<hr \/>\n<div class=\"leaflet-map WPLeafletMap\" style=\"height:300px; width:70%;\"><\/div><script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMapShortcode() {\/*<script>*\/\nvar baseUrl = atob('aHR0cHM6Ly97c30udGlsZS5vcGVuc3RyZWV0bWFwLm9yZy97en0ve3h9L3t5fS5wbmc=');\nvar base = (!baseUrl && window.MQ) ?\n    window.MQ.mapLayer() : L.tileLayer(baseUrl,\n        L.Util.extend({}, {\n            detectRetina: 0,\n        },\n        {\"subdomains\":\"abc\",\"noWrap\":false,\"maxZoom\":18}        )\n    );\n    var options = L.Util.extend({}, {\n        layers: [base],\n        attributionControl: false\n    },\n    {\"zoomControl\":true,\"scrollWheelZoom\":true,\"doubleClickZoom\":true,\"fitBounds\":true,\"minZoom\":9,\"maxZoom\":18,\"maxBounds\":null,\"attribution\":\"<a href=\\\"http:\\\/\\\/leafletjs.com\\\" title=\\\"Une biblioth\\u00e8que JS pour des cartes interactives\\\">Leaflet<\\\/a>; \\u00a9 <a href=\\\"http:\\\/\\\/www.openstreetmap.org\\\/copyright\\\">OpenStreetMap<\\\/a> contributeurs\"},\n    {});\nwindow.WPLeafletMapPlugin.createMap(options).setView([43.560830727361,1.4672373725804],16);window.WPLeafletMapPlugin.createScale({});});<\/script>\n<script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMarkerShortcode() {\/*<script>*\/\nvar map = window.WPLeafletMapPlugin.getCurrentMap();\nvar group = window.WPLeafletMapPlugin.getCurrentGroup();\nvar marker_options = window.WPLeafletMapPlugin.getIconOptions({});\nvar marker = L.marker(\n    [0,0],\n    marker_options\n);\nvar is_image = map.is_image_map;\n    marker.setLatLng( map.getCenter() );\nif (marker_options.draggable) {\n    marker.on('dragend', function () {\n        var latlng = this.getLatLng();\n        var lat = latlng.lat;\n        var lng = latlng.lng;\n        if (is_image) {\n            console.log('leaflet-marker y=' + lat + ' x=' + lng);\n        } else {\n            console.log('leaflet-marker lat=' + lat + ' lng=' + lng);\n        }\n    });\n}\nmarker.addTo( group );\nmarker.bindPopup(window.WPLeafletMapPlugin.unescape('Salle de conf\u00e9rence (- B\u00e2timent 3R4)'));window.WPLeafletMapPlugin.markers.push( marker );\n        });<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Lieu : Salle de conf\u00e9rence, B\u00e2timent 3R4<\/p>\n","protected":false},"author":5,"featured_media":0,"template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[48,313,233],"class_list":["post-11643","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-events","tribe_events_cat-lpt","tribe_events_cat-seminars","cat_events","cat_lpt","cat_seminars"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - 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