{"id":27602,"date":"2020-06-30T16:39:00","date_gmt":"2020-06-30T09:39:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=27602"},"modified":"2021-11-07T22:33:44","modified_gmt":"2021-11-07T15:33:44","slug":"cac-loi-ich-xu-ly-du-lieu-quang-hoc-tu-cong-nghe-di-dong-moi","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/cac-loi-ich-xu-ly-du-lieu-quang-hoc-tu-cong-nghe-di-dong-moi\/","title":{"rendered":"C\u00e1c l\u1ee3i \u00edch x\u1eed l\u00fd d\u1eef li\u1ec7u quang h\u1ecdc t\u1eeb c\u00f4ng ngh\u1ec7 di \u0111\u1ed9ng m\u1edbi"},"content":{"rendered":"\n<p><strong><em>\u0110i\u1ec1u khi\u1ec3n ch\u1ebf \u0111\u1ed9 (Mode control) l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111i\u1ec1u khi\u1ec3n thi\u1ebft y\u1ebfu cho c\u00e1c c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng th\u00f4ng tin quang.<\/em><\/strong><br><img decoding=\"async\" alt=\"\" src=\"http:\/\/www.ninhthuan.gov.vn\/chinhquyen\/sokhcn\/Admin\/ImagesTin\/2020\/188.jpg\"><\/p>\n\n\n\n<p>Gi\u1edd \u0111\u00e2y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u1edf Trung Qu\u1ed1c v\u00e0 Canada \u0111\u00e3 ch\u1ee9ng minh \u0111\u01b0\u1ee3c c\u00e1ch th\u1ee9c \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 chuy\u1ec3n ch\u1ebf \u0111\u1ed9 quang trong c\u00e1c thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn h\u01a1n tr\u01b0\u1edbc \u0111\u00e2y b\u1eb1ng c\u00e1ch khai th\u00e1c \u201c<em>c\u00e1c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t<\/em>\u201d (exceptional point) v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh di \u0111\u1ed9ng m\u1edbi.<\/p>\n\n\n\n<p>Bing Wang, nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m quang \u0111i\u1ec7n t\u1eed qu\u1ed1c gia V\u0169 H\u00e1n &#8211; Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Huazhong, Trung Qu\u1ed1c, t\u00e1c gi\u1ea3 \u0111\u1ee9ng \u0111\u1ea7u nghi\u00ean c\u1ee9u, gi\u1ea3i th\u00edch: \u201c<em>\u0110\u1ec3 c\u00f3 th\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u00e1c thi\u1ebft b\u1ecb c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u, t\u1ed5n hao do ch\u00e8n th\u1ea5p, hi\u1ec7u n\u0103ng cao lu\u00f4n lu\u00f4n l\u00e0 th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ch\u00fang t\u00f4i<\/em>\u201d.<\/p>\n\n\n\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c th\u00e1ch th\u1ee9c n\u00e0y, \u00f4ng v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m quang \u0111i\u1ec7n t\u1eed qu\u1ed1c gia V\u0169 H\u00e1n, Vi\u1ec7n c\u00f4ng ngh\u1ec7 k\u1ef9 thu\u1eadt V\u0169 H\u00e1n, Trung t\u00e2m xu\u1ea5t s\u1eafc v\u1ec1 khoa h\u1ecdc laser si\u00eau c\u01b0\u1eddng \u0111\u1ed9 t\u1ea1i Th\u01b0\u1ee3ng H\u1ea3i, thu\u1ed9c Vi\u1ec7n h\u00e0n l\u00e2m khoa h\u1ecdc Trung Qu\u1ed1c&nbsp; v\u00e0 Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Ottawa \u0111\u00e3 th\u1ef1c hi\u1ec7n nghi\u00ean c\u1ee9u v\u1ec1 h\u00e0nh vi c\u1ee7a &#8220;<em>nh\u1eefng \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t<\/em>&#8221; &#8211; m\u1ed9t kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc \u0111\u00e3 thu h\u00fat nhi\u1ec1u s\u1ef1 quan t\u00e2m g\u1ea7n \u0111\u00e2y \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng vi s\u00f3ng v\u00e0 d\u1eabn h\u01b0\u1edbng quang h\u1ecdc do \u0111\u01b0\u1ee3c cho l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n ch\u1ebf \u0111\u1ed9 v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh t\u00f4p\u00f4.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, nh\u1eefng n\u1ed7 l\u1ef1c khai th\u00e1c c\u00e1c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t trong c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n ch\u1ebf \u0111\u1ed9 tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 g\u1eb7p ph\u1ea3i nhi\u1ec1u tr\u1edf ng\u1ea1i b\u1edfi nh\u1eefng h\u1ea1n ch\u1ebf trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t truy\u1ec1n v\u00e0 ch\u1ebf \u0111\u1ed9 truy\u1ec1n. \u0110\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean, Wang v\u00e0 c\u1ed9ng s\u1ef1 c\u1ee7a m\u00ecnh xem x\u00e9t \u0111\u1ebfn t\u00ednh n\u0103ng c\u1ee7a c\u00e1c \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t m\u00e0 c\u00f3 th\u1ec3 d\u1ecbch chuy\u1ec3n. Nh\u1eefng \u0111i\u1ec3m \u0111\u1eb7c bi\u1ec7t n\u00e0y cho ph\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t truy\u1ec1n v\u00e0 ch\u1ebf \u0111\u1ed9 truy\u1ec1n cao b\u00ean trong \u1ed1ng d\u1eabn s\u00f3ng ng\u1eafn h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n<p><em>\u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t (exceptional point) l\u00e0 g\u00ec?<\/em><\/p>\n\n\n\n<p>M\u1ed9t \u0111a t\u1ea1p (manifold) c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 m\u1ed9t kh\u00f4ng gian t\u00f4p\u00f4 gi\u1ed1ng c\u1ee5c b\u1ed9 v\u1edbi kh\u00f4ng gian Euclide t\u1ea1i m\u1ed7i \u0111i\u1ec3m. Trong kh\u00f4ng gian m\u1ed9t chi\u1ec1u th\u1ef1c, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c \u0111\u01b0\u1eddng tuy\u1ebfn ho\u1eb7c v\u00f2ng tr\u00f2n, nh\u01b0ng kh\u00f4ng c\u00f3 h\u00ecnh con s\u1ed1 t\u00e1m v\u00ec \u0111i\u1ec3m giao nhau s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong kh\u00f4ng gian Euclide. C\u00e1c s\u1ed1 ph\u1ee9c h\u1ee3p bao g\u1ed3m c\u00e1c ph\u1ea7n th\u1ef1c v\u00e0 ph\u1ea7n \u1ea3o, trong \u0111\u00f3 ph\u1ea7n \u1ea3o c\u00f3 t\u1ef7 l\u1ec7 v\u1edbi c\u0103n b\u1eadc hai c\u1ee7a 1 v\u00e0 n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 t\u1ea3 h\u00e0nh vi gi\u1ea3m x\u00f3c trong c\u00e1c h\u1ec7 th\u1ed1ng v\u1eadt l\u00fd. Do c\u00f3 hai th\u00e0nh ph\u1ea7n, m\u1ed9t \u0111a t\u1ea1p ph\u1ee9c h\u1ee3p m\u1ed9t chi\u1ec1u \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi d\u1ea1ng m\u1eb7t ph\u1eb3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ec1 m\u1eb7t Riemann, c\u00f3 th\u1ec3 bi\u1ec3u th\u1ecb gi\u00e1 tr\u1ecb ri\u00eang c\u1ee7a n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t ch\u1ebf \u0111\u1ed9 c\u1ee5 th\u1ec3 trong m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 s\u1ef1 ti\u00eau hao.\u00a0 \u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111i\u1ec3m k\u1ef3 d\u1ecb ph\u00e2n nh\u00e1nh \u0111\u1eb7c bi\u1ec7t, n\u01a1i hai ch\u1ebf \u0111\u1ed9 c\u00f3 th\u1ec3 g\u1eb7p nhau, v\u00e0 \u0111\u00e2y l\u00e0 thu\u1ed9c t\u00ednh t\u00f4 p\u00f4 cho ph\u00e9p ch\u1ebf \u0111\u1ed9 c\u00f3 th\u1ec3 truy\u1ec1n trong h\u1ec7 th\u1ed1ng<\/p>\n\n\n\n<p>.<em>P.T.T (NASATI), theo https:\/\/phys.org\/news\/2020-03-optical-benefits-kind-mobillity.html<\/em><\/p>\n\n\n\n<p>ngu\u1ed3n: https:\/\/vista.gov.vn\/news\/khoa-hoc-ky-thuat-va-cong-nghe\/cac-loi-ich-xu-ly-du-lieu-quang-hoc-tu-cong-nghe-di-dong-moi-1816.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110i\u1ec1u khi\u1ec3n ch\u1ebf \u0111\u1ed9 (Mode control) l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111i\u1ec1u khi\u1ec3n thi\u1ebft y\u1ebfu cho c\u00e1c c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng th\u00f4ng tin quang. Gi\u1edd \u0111\u00e2y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u1edf Trung Qu\u1ed1c v\u00e0 Canada \u0111\u00e3 ch\u1ee9ng minh \u0111\u01b0\u1ee3c c\u00e1ch th\u1ee9c \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 chuy\u1ec3n ch\u1ebf \u0111\u1ed9 quang trong [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":29713,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-27602","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=27602"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27602\/revisions"}],"predecessor-version":[{"id":29714,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27602\/revisions\/29714"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/29713"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=27602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=27602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=27602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}