{"id":16811,"date":"2023-02-27T11:50:51","date_gmt":"2023-02-27T02:50:51","guid":{"rendered":"https:\/\/www.waseda.jp\/fsci\/mathphys\/?p=16811"},"modified":"2023-12-05T11:59:50","modified_gmt":"2023-12-05T02:59:50","slug":"%e7%89%b9%e5%88%a5%e8%ac%9b%e7%be%a9%e3%80%8cclassical-and-quantum-control%e3%80%8d%e9%96%8b%e5%82%ac-2","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/fsci\/mathphys\/news\/16811","title":{"rendered":"Paolo FACCHI\u6559\u6388\u3068Saverio PASCAZIO\u6559\u6388\u306b\u3088\u308b\u7279\u5225\u30bb\u30df\u30ca\u30fc\u958b\u50ac"},"content":{"rendered":"<p>\u65e9\u7a32\u7530\u5927\u5b66SGU\u6570\u7269\u7cfb\u79d1\u5b66\u62e0\u70b9\u3067\u306f\uff0c\u4ee5\u4e0b\u306e\u8981\u9818\u3067University of Bari\u306ePaolo FACCHI\u6559\u6388\u3068Saverio PASCAZIO\u6559\u6388\u306b\u3088\u308b\u7279\u5225\u30bb\u30df\u30ca\u30fc\u3092\u958b\u50ac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u65e5\u7a0b<\/h3>\n<h4>2023\u5e743\u67087\u65e5\uff08\u706b\uff0916:30-18:00<\/h4>\n<p>\u4f1a\u5834\uff1a\u65e9\u7a32\u7530\u5927\u5b66 \u897f\u65e9\u7a32\u7530\u30ad\u30e3\u30f3\u30d1\u30b9 55\u53f7\u9928N\u68df1\u968e \u7b2c\u4e00\u4f1a\u8b70\u5ba4<br \/>\n\u8b1b\u6f14\u8005\uff1aPaolo FACCHI\u6559\u6388\uff08University of Bari, Italy\uff09<br \/>\n\u984c\u76ee\uff1a\u3000<a href=\"https:\/\/doi.org\/10.1007\/s00023-022-01211-y\" target=\"_blank\" rel=\"noopener\"><strong>&#8220;Control of Quantum Noise: On the Role of Dilations&#8221;<\/strong><\/a><br \/>\n\u6982\u8981\uff1a\u3000We show that every finite-dimensional quantum system with Markovian (i.e. GKLS-generated) time evolution has an autonomous unitary dilation which can be dynamically decoupled. Since quantum stochastic calculus provides also an autonomous unitary dilation which cannot be dynamically decoupled, this highlights the role of dilations in the control of quantum noise. We construct our dilation via a time-dependent version of Stinespring in combination with Howland&#8217;s clock Hamiltonian and certain point-localised states. We show this dilation is very flexible and can be applied to every analytic (not necessarily Markovian) family of quantum channels.<\/p>\n<h4>2023\u5e743\u670813\u65e5\uff08\u6708\uff0916:30-18:00<\/h4>\n<p>\u4f1a\u5834\uff1a\u65e9\u7a32\u7530\u5927\u5b66 \u897f\u65e9\u7a32\u7530\u30ad\u30e3\u30f3\u30d1\u30b9 55\u53f7\u9928N\u68df1\u968e \u7b2c\u4e8c\u4f1a\u8b70\u5ba4<br \/>\n\u8b1b\u6f14\u8005\uff1aSaverio PASCAZIO\u6559\u6388\uff08University of Bari, Italy\uff09<br \/>\n\u984c\u76ee\uff1a\u3000<strong>&#8220;Dimensional Reduction of Field Theories&#8221;<\/strong><br \/>\n\u6982\u8981\uff1a\u3000We derive and discuss one- and two-dimensional (classical) field-theoretical models by making use of Hadamard&#8217;s method of descent. We focus on electromagnetism (Maxwell) and spin-1\/2 fields (Dirac). Low-dimensional field models are conceived as a specialization of the higher dimensional ones, in which the fields are uniform along the additional spatial directions. We consider the free situation and then the interacting fields. The basic properties of these theories, as well as their relation with existing models for two-dimensional matter, are discussed. We focus on the relevance of these findings for the quantum simulation of (lattice) gauge theories.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.f.waseda.jp\/yuasa\/Facchi202303.html\" target=\"_blank\" rel=\"noopener\">\u7279\u5225\u30bb\u30df\u30ca\u30fcHP<\/a><\/li>\n<\/ul>\n<h3>\u8a00\u8a9e<\/h3>\n<p>\u82f1\u8a9e<\/p>\n<h3>\u5bfe\u8c61<\/h3>\n<p>\u7814\u7a76\u8005\u3001\u5b66\u751f<\/p>\n<h3>\u53c2\u52a0\u8cbb<\/h3>\n<p>\u7121\u6599<\/p>\n<h3>\u4e8b\u524d\u767b\u9332<\/h3>\n<p>\u4e0d\u8981<\/p>\n<h3>\u304a\u554f\u5408\u308f\u305b<\/h3>\n<p>\u65e9\u7a32\u7530\u5927\u5b66 \u5148\u9032\u7406\u5de5\u5b66\u90e8 \u7269\u7406\u5b66\u79d1 \u6559\u6388<br \/>\n\u6e6f\u6d45\u4e00\u54c9\u3000yuasa [at] waseda.jp<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u65e9\u7a32\u7530\u5927\u5b66SGU\u6570\u7269\u7cfb\u79d1\u5b66\u62e0\u70b9\u3067\u306f\uff0c\u4ee5\u4e0b\u306e\u8981\u9818\u3067University of Bari\u306ePaolo FACCHI\u6559\u6388\u3068Saverio PASCAZIO\u6559\u6388\u306b\u3088\u308b\u7279\u5225\u30bb\u30df\u30ca\u30fc\u3092\u958b\u50ac\u3057\u307e\u3059\u3002 \u65e5\u7a0b 2023\u5e743\u67087\u65e5\uff08\u706b\uff0916 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":16816,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[53,139,162],"class_list":["post-16811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-events","tag-lecture","tag-education"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/posts\/16811","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/comments?post=16811"}],"version-history":[{"count":1,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/posts\/16811\/revisions"}],"predecessor-version":[{"id":18396,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/posts\/16811\/revisions\/18396"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/media\/16816"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/media?parent=16811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/categories?post=16811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/mathphys\/wp-json\/wp\/v2\/tags?post=16811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}