{"id":1773,"date":"2023-10-05T14:42:14","date_gmt":"2023-10-05T12:42:14","guid":{"rendered":"https:\/\/www.institut-foton.eu\/?p=1773"},"modified":"2025-04-22T12:18:56","modified_gmt":"2025-04-22T10:18:56","slug":"mocassin-microcavites-optiques-de-grande-finesse-pour-des-applications-en-magnetometrie-a-centres-nv-du-diamant","status":"publish","type":"post","link":"https:\/\/www.institut-foton.eu\/en\/mocassin-microcavites-optiques-de-grande-finesse-pour-des-applications-en-magnetometrie-a-centres-nv-du-diamant\/","title":{"rendered":"MOCASSIN : Microcavit\u00e9s optiques de grande finesse pour des applications en magn\u00e9tom\u00e9trie \u00e0 centres NV du diamant"},"content":{"rendered":"\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-6c531013 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-fe9cc265 wp-block-group-is-layout-flex\">\n<p>janvier 2017 \u2013 d\u00e9cembre 2019<\/p>\n\n\n\n<p>Projet PICS <a href=\"https:\/\/www.cnrs.fr\/fr\">CNRS<\/a><\/p>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/CNRS.jpg\" alt=\"\" class=\"wp-image-1623\" style=\"object-fit:cover;width:85px;height:85px\" width=\"85\" height=\"85\" srcset=\"https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/CNRS.jpg 225w, https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/CNRS-150x150.jpg 150w\" sizes=\"auto, (max-width: 85px) 100vw, 85px\" \/><\/figure>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Contexte<\/h2>\n\n\n\n<p>Du fait de leurs niveaux d\u2019\u00e9nergie tr\u00e8s isol\u00e9s du milieu ext\u00e9rieur, les centres NV du diamant poss\u00e8dent d\u2019exceptionnelles propri\u00e9t\u00e9s optiques et de spin comparables \u00e0 celles des atomes. Ceci en fait des candidats prometteurs pour l\u2019int\u00e9gration d\u2019exp\u00e9riences complexes de physique atomique. La magn\u00e9tom\u00e9trie de pr\u00e9cision est l\u2019application profitant de la possibilit\u00e9 de d\u00e9tecter optiquement leur spin \u00e9lectronique la plus d\u00e9velopp\u00e9e. Deux mani\u00e8res de sonder le spin du centre NV sont utilis\u00e9es, elles reposent soit sur la mesure de sa luminescence ou de son absorption infrarouge. La seconde m\u00e9thode a l\u2019avantage de ne pas \u00eatre limit\u00e9e par la faible efficacit\u00e9 de collection et le peu de contraste associ\u00e9s \u00e0 la luminescence visible. Malheureusement, \u00e0 temp\u00e9rature ambiante, l\u2019\u00e9largissement de la r\u00e9sonance infrarouge r\u00e9duit son absorption. Le projet MOCASSIN utilisera des microcavit\u00e9s de haute finesse pour augmenter l\u2019absorption IR et ainsi obtenir un magn\u00e9tom\u00e8tre int\u00e9gr\u00e9 fonctionnant \u00e0 temp\u00e9rature ambiante.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Objectifs<\/h2>\n\n\n\n<p>Dans le cadre du projet MOCASSIN le d\u00e9partement de physique de l\u2019Universit\u00e9 du Nouveau Mexique et l\u2019Institut Foton exploreront conjointement diff\u00e9rentes pistes de recherche sur les cavit\u00e9s de haute finesse en diamant:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"puce1\">\u00c9tude th\u00e9orique des magn\u00e9tom\u00e8tres \u00e0 centres NV en microcavit\u00e9 optique qui ont potentiellement plusieurs avantages : meilleur seuil de d\u00e9tection, possibilit\u00e9 de miniaturisation et d\u2019int\u00e9gration sous forme de matrices. L\u2019utilisation de cavit\u00e9s non-lin\u00e9aires ou l\u2019extension au domaine infrarouge de l\u2019id\u00e9e de magn\u00e9tom\u00e8tre \u00e0 seuil laser seront \u00e9galement envisag\u00e9s.<\/li>\n\n\n\n<li>Toujours d\u2019un point de vue fondamental, analyse des possibilit\u00e9s pour atteindre la limite du bruit de projection des magn\u00e9tom\u00e8tres \u00e0 centres NV.<\/li>\n\n\n\n<li>Fabrication de microcavit\u00e9s en diamant optimis\u00e9es pour la magn\u00e9tom\u00e9trie optique.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Production scientifique<\/h2>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-6c531013 wp-block-group-is-layout-flex\">\n<p>Voir dans HAL<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/hal.science\/search\/index\/?qa%5Bcollaboration_t%5D%5B%5D=mocassin\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/HAL_Logotype_2021.png\" alt=\"\" class=\"wp-image-1365\" style=\"width:109px;height:40px\" width=\"109\" height=\"40\" srcset=\"https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/HAL_Logotype_2021.png 949w, https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/HAL_Logotype_2021-300x110.png 300w, https:\/\/www.institut-foton.eu\/wp-content\/uploads\/2023\/10\/HAL_Logotype_2021-768x282.png 768w\" sizes=\"auto, (max-width: 109px) 100vw, 109px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Partenaires<\/h2>\n\n\n\n<p>Foton-SP &#8211; Universit\u00e9 du Nouveau Mexique (Albuquerque, USA)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Coordinateur<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.institut-foton.eu\/dumeige-yannick\/\" data-type=\"post\" data-id=\"1444\">Yannick DUMEIGE<\/a> (Foton-SP)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Financement<\/h2>\n\n\n\n<p>CNRS (16 k\u20ac)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>janvier 2017 \u2013 d\u00e9cembre 2019<\/p>\n","protected":false},"author":9,"featured_media":1623,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[25],"tags":[111,50],"class_list":["post-1773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projets","tag-departement-sp","tag-lasers-applications-communications-optiques"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"en","enabled_languages":["fr","en"],"languages":{"fr":{"title":true,"content":true,"excerpt":true},"en":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/posts\/1773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/comments?post=1773"}],"version-history":[{"count":2,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/posts\/1773\/revisions"}],"predecessor-version":[{"id":2420,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/posts\/1773\/revisions\/2420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/media\/1623"}],"wp:attachment":[{"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/media?parent=1773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/categories?post=1773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.institut-foton.eu\/en\/wp-json\/wp\/v2\/tags?post=1773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}