{"id":26310,"date":"2020-09-26T20:05:11","date_gmt":"2020-09-26T13:05:11","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=26310"},"modified":"2021-11-14T20:13:25","modified_gmt":"2021-11-14T13:13:25","slug":"chip-chuyen-doi-luong-tu-toc-do-anh-sang-dau-tien-the-gioi","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/chip-chuyen-doi-luong-tu-toc-do-anh-sang-dau-tien-the-gioi\/","title":{"rendered":"Chip chuy\u1ec3n \u0111\u1ed5i l\u01b0\u1ee3ng t\u1eed t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u1ea7u ti\u00ean th\u1ebf gi\u1edbi"},"content":{"rendered":"\n

Chip s\u1eed d\u1ee5ng h\u1ea1t photon, thay th\u1ebf h\u1ea1t \u0111i\u1ec7n t\u1eed th\u00f4ng th\u01b0\u1eddng trong m\u00e1y t\u00ednh, c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi h\u00e0ng tr\u0103m k\u00eanh v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng.<\/p>\n\n\n\n

Vi\u1ec7n C\u00f4ng ngh\u1ec7 L\u01b0\u1ee3ng t\u1eed T\u1ebf Nam v\u00e0 \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Trung Qu\u1ed1c \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng chip chuy\u1ec3n \u0111\u1ed5i l\u01b0\u1ee3ng t\u1eed v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u1ea7u ti\u00ean tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n\n\n\n

Chip n\u00e0y bao g\u1ed3m \u1ed1ng d\u1eabn s\u00f3ng t\u1edbi 34 k\u00eanh v\u00e0 m\u1ed9t m\u1ea3ng s\u1ee3i quang li\u00ean k\u1ebft gi\u1eefa c\u00e1c k\u00eanh, ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean \u1ed1ng d\u1eabn s\u00f3ng lithium niobate ph\u00e2n c\u1ef1c \u0111\u1ecbnh k\u1ef3, trao \u0111\u1ed5i photon ng\u01b0\u1ee3c, c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi tr\u00ean v\u00e0i tr\u0103m k\u00eanh. Chip \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c t\u00edn hi\u1ec7u photon \u0111\u01a1n trong d\u1ea3i t\u1ea7n 1550 nanomet v\u00e0 chuy\u1ec3n \u00e1nh s\u00e1ng \u1edf d\u1ea3i t\u1ea7n 1950 nanomet. C\u00e1c th\u00ed nghi\u1ec7m cho th\u1ea5y hi\u1ec7u su\u1ea5t trung b\u00ecnh c\u1ee7a t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u1ea1t 60%, cao h\u01a1n t\u1ed1c \u0111\u1ed9 chip \u0111i\u1ec7n t\u1eed th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n

Chip l\u01b0\u1ee3ng t\u1eed. \u1ea2nh: Science Net.<\/em><\/p>\n\n\n\n

T\u00ednh to\u00e1n l\u01b0\u1ee3ng t\u1eed l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng si\u00eau vi\u1ec7t d\u1ef1a tr\u00ean c\u00e1c ph\u00e2n t\u1eed \u1edf tr\u1ea1ng th\u00e1i r\u1ed1i. Khi hai ph\u00e2n t\u1eed li\u00ean \u0111\u1edbi v\u1edbi nhau, ch\u00fang s\u1ebd t\u1ea1o m\u1ed9t li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd khi\u1ebfn m\u1ecdi t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed9t nguy\u00ean t\u1eed \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng t\u1edbi nguy\u00ean t\u1eed kh\u00e1c, m\u1eb7c d\u00f9 c\u00e1ch xa nhau.<\/p>\n\n\n\n

C\u00e1c chip m\u00e1y t\u00ednh ng\u00e0y nay th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i \u0111i\u1ec7n t\u1eed kh\u00e1c nhau \u0111\u1ec3 m\u00e3 h\u00f3a cho c\u00e1c s\u1ed1 0 v\u00e0 1. \u0110\u1ebfn nay, nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 t\u00ednh to\u00e1n l\u01b0\u1ee3ng t\u1eed \u0111\u00e3 t\u1eadp trung v\u00e0o l\u00e0m t\u1ed1i \u01b0u h\u00f3a c\u00e1c h\u1ea1t \u0111i\u1ec7n t\u1eed \u0111\u1ec3 \u0111\u1ea9y nhanh t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd c\u1ee7a m\u00e1y t\u00ednh. Tuy v\u1eady, k\u1ef9 thu\u1eadt s\u1eed d\u1ee5ng c\u00e1c h\u1ea1t \u0111i\u1ec7n t\u1eed trong chip m\u00e1y t\u00ednh g\u1eb7p nhi\u1ec1u h\u1ea1n ch\u1ebf khi s\u1ed1 l\u01b0\u1ee3ng k\u00eanh truy\u1ec1n l\u00ean t\u1edbi h\u00e0ng tr\u0103m. Vi\u1ec7c \u00e1p d\u1ee5ng h\u1ea1t photon thay th\u1ebf h\u1ea1t \u0111i\u1ec7n t\u1eed c\u00f3 kh\u1ea3 n\u0103ng di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111ang \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc h\u01b0\u1edbng t\u1edbi.<\/p>\n\n\n\n

Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0a b\u1ed9 chip n\u00e0y v\u00e0o chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1 l\u01b0\u1ee3ng t\u1eed, chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1 ch\u00eanh l\u1ec7ch \u0111a k\u00eanh, c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef l\u01b0\u1ee3ng t\u1eed \u0111a k\u00eanh \u0111\u01b0\u1eddng d\u00e0i sau n\u00e0y. H\u1ecd c\u0169ng s\u1eed d\u1ee5ng chip th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1ec3 ph\u00e1t tri\u1ec3n lo\u1ea1i m\u00e1y d\u00f2 photon \u0111\u01a1n, c\u00f3 tri\u1ec3n v\u1ecdng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong ph\u00e2n ph\u1ed1i l\u01b0\u1ee3ng t\u1eed t\u1ed1c \u0111\u1ed9 cao, truy\u1ec1n laser kh\u00f4ng gian s\u00e2u, h\u00ecnh \u1ea3nh lidar.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed Physical Review Applied.<\/p>\n\n\n\n

Nguy\u1ec5n Xu\u00e2n<\/strong>\u00a0(Theo\u00a0Science Net<\/em>) ngu\u1ed3n: vnexpress<\/p>\n\n\n\n

Chip chuy\u1ec3n \u0111\u1ed5i l\u01b0\u1ee3ng t\u1eed t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u1ea7u ti\u00ean th\u1ebf gi\u1edbi – VnExpress<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Chip s\u1eed d\u1ee5ng h\u1ea1t photon, thay th\u1ebf h\u1ea1t \u0111i\u1ec7n t\u1eed th\u00f4ng th\u01b0\u1eddng trong m\u00e1y t\u00ednh, c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi h\u00e0ng tr\u0103m k\u00eanh v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng. Vi\u1ec7n C\u00f4ng ngh\u1ec7 L\u01b0\u1ee3ng t\u1eed T\u1ebf Nam v\u00e0 \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Trung Qu\u1ed1c \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng chip chuy\u1ec3n \u0111\u1ed5i […]<\/p>\n","protected":false},"author":25,"featured_media":26311,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-26310","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\/26310","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=26310"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/26310\/revisions"}],"predecessor-version":[{"id":30000,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/26310\/revisions\/30000"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/26311"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=26310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=26310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=26310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}