{"id":93380,"date":"2019-03-03T23:17:04","date_gmt":"2019-03-03T23:17:04","guid":{"rendered":"https:\/\/\/trois-composants-pour-ordinateurs-quantiques-integres-sur-une-puce\/"},"modified":"2019-03-03T23:17:04","modified_gmt":"2019-03-03T23:17:04","slug":"trois-composants-pour-ordinateurs-quantiques-integres-sur-une-puce","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/trois-composants-pour-ordinateurs-quantiques-integres-sur-une-puce\/","title":{"rendered":"Trois composants pour ordinateurs quantiques int\u00e9gr\u00e9s sur une puce"},"content":{"rendered":"

\u00ab\u00a0L’un des d\u00e9fis de cette exp\u00e9rience, r\u00e9alis\u00e9e enti\u00e8rement sur une puce, \u00e9tait la proximit\u00e9 du laser d’excitation aux d\u00e9tecteurs de la puce\u00a0\u00bb, expliquent Ekkehart Schmidt de KIT et Mario Schwartz de l’Universit\u00e9 de Stuttgart. \u00ab\u00a0Les d\u00e9tecteurs ne peuvent pas distinguer quels photons proviennent du laser et lesquels du point quantique. Cela conduit \u00e0 des d\u00e9tections ind\u00e9sirables.\u00a0\u00bb Schmidt et Schwartz ont consid\u00e9rablement r\u00e9duit l\u2019influence des photons laser en pla\u00e7ant des couches m\u00e9talliques r\u00e9fl\u00e9chissantes sur la puce.<\/p>\n

Des structures de la taille d’un nanom\u00e8tre – appel\u00e9es points quantiques – sur une plate-forme en ars\u00e9niure de gallium servent de sources efficaces de photons uniques. Des circuits logiques optiques et des d\u00e9tecteurs sp\u00e9ciaux constitu\u00e9s de nanofils supraconducteurs peuvent \u00e9galement \u00eatre plac\u00e9s sur la m\u00eame puce. Dans l’exp\u00e9rience r\u00e9alis\u00e9e par les Knowledgexhaftists, des photons uniques \u00e9mis par un point quantique pomp\u00e9 optiquement \u00e9taient guid\u00e9s dans un guide d’onde photonique et divis\u00e9s par un diviseur de faisceau en deux bras de guide d’onde \u00e9quip\u00e9s chacun d’un d\u00e9tecteur.<\/p>\n

Universit\u00e9 de Stuttgart<\/a><\/p>\n

Autre article<\/strong><\/p>\n

L’Imec et le CEA unissent leurs forces sur l’IA et l’informatique quantique<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Les ordinateurs quantiques devraient r\u00e9soudre certains probl\u00e8mes informatiques beaucoup plus rapidement que les ordinateurs classiques. Une approche quantique utilise des photons uniques pour la transmission et le traitement de l’information, ce qui est toutefois complexe dans la r\u00e9alisation technique. Des chercheurs de l’institut de technologie de Karlsruhe et de l’universit\u00e9 de Stuttgart ont int\u00e9gr\u00e9 pour la premi\u00e8re fois trois composants techniques essentiels – sources \u00e0 photon unique, s\u00e9parateurs de faisceau et d\u00e9tecteurs \u00e0 photon unique – sur une seule puce compacte.<\/p>\n","protected":false},"author":11,"featured_media":93381,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[883],"tags":[],"domains":[47],"ppma_author":[1143],"class_list":["post-93380","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","domains-electronique-eci"],"acf":[],"yoast_head":"Trois composants pour ordinateurs quantiques int\u00e9gr\u00e9s sur une...<\/title>\n<meta name=\"description\" content=\"Les ordinateurs quantiques devraient r\u00e9soudre certains probl\u00e8mes informatiques beaucoup plus rapidement que les ordinateurs classiques. 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Des chercheurs de l'institut de technologie de Karlsruhe et de l'universit\u00e9 de Stuttgart ont int\u00e9gr\u00e9 pour la premi\u00e8re fois trois composants techniques essentiels - sources \u00e0 photon unique, s\u00e9parateurs de faisceau et d\u00e9tecteurs \u00e0 photon unique - sur une seule puce compacte.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/93380\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-03T23:17:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/puce_quantique.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"595\" \/>\n\t<meta property=\"og:image:height\" content=\"336\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Daniel Cardon\" \/>\n<meta name=\"twitter:card\" 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