{"id":8992,"date":"2020-03-06T13:01:09","date_gmt":"2020-03-06T12:01:09","guid":{"rendered":"https:\/\/staging.ggba.swiss\/luniversite-de-neuchatel-developpe-une-horloge-atomique-miniaturisee\/"},"modified":"2023-07-04T13:43:20","modified_gmt":"2023-07-04T11:43:20","slug":"luniversite-de-neuchatel-developpe-une-horloge-atomique-miniaturisee","status":"publish","type":"post","link":"https:\/\/staging.ggba.swiss\/fr\/luniversite-de-neuchatel-developpe-une-horloge-atomique-miniaturisee\/","title":{"rendered":"L’Universit\u00e9 de Neuch\u00e2tel d\u00e9veloppe une horloge atomique miniaturis\u00e9e"},"content":{"rendered":"

Le Laboratoire Temps-Fr\u00e9quence de l\u2019Universit\u00e9 de Neuch\u00e2tel travaille \u00e0 la cr\u00e9ation d\u2019une nouvelle g\u00e9n\u00e9ration d\u2019horloges atomiques, en collaboration avec l\u2019Agence spatiale europ\u00e9enne.<\/h4>\n

Le temps n\u2019a presque plus de secrets pour les scientifiques du Laboratoire Temps-Fr\u00e9quence (LTF<\/a>) de l\u2019Universit\u00e9 de Neuch\u00e2tel (UniNE<\/a>). Depuis 13 ans, ils explorent et repoussent les fronti\u00e8res dans les domaines de la recherche temps-fr\u00e9quence, de la m\u00e9trologie optique et des technologies et sciences ultra-rapides. Ils s’appr\u00eatent maintenant \u00e0 relever un nouveau d\u00e9fi : le d\u00e9veloppement d\u2019une horloge atomique miniaturis\u00e9e.<\/p>\n

Soutenu par l\u2019Agence spatiale europ\u00e9enne (ESA<\/a>), le projet AMICC<\/a> (pour Advanced Micro-Cell Atomic Clock, ou horloge atomique avanc\u00e9e \u00e0 micro-cellules) vise la cr\u00e9ation d\u2019une nouvelle g\u00e9n\u00e9ration d\u2019horloges atomiques moins gourmandes en \u00e9nergie, moins d\u00e9pendantes d\u2019alimentation \u00e9lectrique et donc plus mobiles, pour \u00e0 terme \u00e9quiper les GPS, les smartphones et notamment le nouveau syst\u00e8me europ\u00e9en de positionnement par satellite Galileo. Il s\u2019agit du quinzi\u00e8me contrat d\u2019envergure que le LTF d\u00e9croche avec l\u2019ESA.<\/p>\n

\u00ab Le syst\u00e8me Galileo exige diff\u00e9rents types d\u2019horloges suivant l\u2019endroit auquel elles sont destin\u00e9es, \u00e0 bord des satellites, mais aussi dans des stations \u00e0 terre et pour les r\u00e9cepteurs via la t\u00e9l\u00e9phonie mobile \u00bb, explique Gaetano Mileti, professeur au LTF et responsable du projet. L\u2019id\u00e9e est de poursuivre le d\u00e9veloppement des horloges atomiques \u00e0 cellules de rubidium, qui suivent un principe de fonctionnement original d\u00e9j\u00e0 test\u00e9 par les \u00e9quipes suisses de l\u2019UniNE et de l\u2019EPFL.<\/p>\n

\u00c0 la pointe de la recherche sur les horloges atomiques, le canton de Neuch\u00e2tel compte \u00e9galement trois entreprises sp\u00e9cialis\u00e9es dans leur production.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le Laboratoire Temps-Fr\u00e9quence de l\u2019Universit\u00e9 de Neuch\u00e2tel travaille \u00e0 la cr\u00e9ation d\u2019une nouvelle g\u00e9n\u00e9ration d\u2019horloges atomiques, en collaboration avec l\u2019Agence spatiale europ\u00e9enne. Le temps n\u2019a presque plus de secrets pour les scientifiques du Laboratoire Temps-Fr\u00e9quence (LTF) de l\u2019Universit\u00e9 de Neuch\u00e2tel (UniNE). Depuis 13 ans, ils explorent et repoussent les fronti\u00e8res dans les domaines de la […]<\/p>\n","protected":false},"author":3,"featured_media":8993,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"mc4wp_mailchimp_campaign":[]},"categories":[842],"tags":[],"acf":[],"yoast_head":"\nL'Universit\u00e9 de Neuch\u00e2tel d\u00e9veloppe une horloge atomique miniaturis\u00e9e - Greater Geneva Bern area<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'Universit\u00e9 de Neuch\u00e2tel d\u00e9veloppe une horloge atomique miniaturis\u00e9e - Greater Geneva Bern area\" \/>\n<meta property=\"og:description\" content=\"Le Laboratoire Temps-Fr\u00e9quence de l\u2019Universit\u00e9 de Neuch\u00e2tel travaille \u00e0 la cr\u00e9ation d\u2019une nouvelle g\u00e9n\u00e9ration d\u2019horloges atomiques, en collaboration avec l\u2019Agence spatiale europ\u00e9enne. 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