{"id":5035,"date":"2021-12-20T15:31:45","date_gmt":"2021-12-20T07:31:45","guid":{"rendered":"https:\/\/qt.ntu.edu.tw\/qoa\/?p=5035"},"modified":"2024-11-05T19:52:02","modified_gmt":"2024-11-05T11:52:02","slug":"202112-qc-quantum-computer2","status":"publish","type":"post","link":"https:\/\/qt.ntu.edu.tw\/qoa\/202112-qc-quantum-computer2\/","title":{"rendered":"\u4e2d\u570b\u5718\u968a\u5ba3\u7a31\u958b\u767c\u51fa\u5c55\u73fe\u91cf\u5b50\u512a\u52e2\u7684\u91cf\u5b50\u96fb\u8166"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5035\" class=\"elementor elementor-5035\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f6fc73e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f6fc73e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e9a8437\" data-id=\"e9a8437\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2f8d926 elementor-widget elementor-widget-text-editor\" data-id=\"2f8d926\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><small><a href=\"https:\/\/qt.ntu.edu.tw\/qoa\">Home<\/a> \/ <a href=\"https:\/\/qt.ntu.edu.tw\/qoa\/newspaper\/about_quantum\/\">\u91cf\u5b50\u65b0\u77e5<\/a><\/small><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b4c22aa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b4c22aa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2ddaaca\" data-id=\"2ddaaca\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dd5ccc8 elementor-widget elementor-widget-text-editor\" data-id=\"dd5ccc8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u9ec3\u6587\u6ed4\uff5c\u7279\u7d04\u7de8\u8f2f (\u81fa\u7063\u5927\u5b78\u5316\u5b78\u7cfb\u78a9\u58eb)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c27e5ff elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c27e5ff\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1301da6\" data-id=\"1301da6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a819c6f elementor-widget elementor-widget-text-editor\" data-id=\"a819c6f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u5229\u7528\u91cf\u5b50\u96fb\u8166\u89e3\u6c7a\u53e4\u5178\u96fb\u8166\u7121\u6cd5\u89e3\u6c7a\u7684\u8907\u96dc\u8a08\u7b97\u554f\u984c\uff0c\u5f9e\u800c\u5be6\u73fe\u91cf\u5b50\u512a\u52e2(quantum supremacy)\uff0c\u662f\u5404\u570b\u7814\u7a76\u5718\u968a\u52aa\u529b\u8ffd\u6c42\u7684\u76ee\u6a19\u3002\u7e7cIBM\u8207Google\u7684\u5718\u968a\u4e4b\u5f8c\uff0c\u8fd1\u65e5\u4ee5\u4e2d\u570b\u79d1\u6280\u5927\u5b78\u70ba\u4e3b\u7684\u5718\u968a\u5728\u300a\u7269\u7406\u8a55\u8ad6\u5feb\u5831\u300b\u767c\u8868\u5169\u9805\u7814\u7a76\u4e26\u5ba3\u7a31\u5be6\u73fe\u4e86\u91cf\u5b50\u512a\u52e2\u3002\u5176\u4e2d\u4e00\u9805\u7814\u7a76\u958b\u767c\u51fa\u91dd\u5c0d144\u6a21\u5e72\u6d89\u5100\u7684\u9ad8\u65af\u73bb\u8272\u5b50\u53d6\u6a23(Gaussian boson sampling)\u554f\u984c\u7684\u5149\u5b78\u91cf\u5b50\u96fb\u8166\uff0c\u53e6\u4e00\u9805\u7814\u7a76\u5247\u662f\u958b\u767c\u51fa\u5177\u670966\u500b\u91cf\u5b50\u4f4d\u5143\u7684\u8d85\u5c0e\u91cf\u5b50\u96fb\u8166\u300c\u7956\u51b2\u4e4b\u865f\u300d\u4e26\u61c9\u7528\u5728\u96a8\u6a5f\u91cf\u5b50\u96fb\u8def\u53d6\u6a23(random quantum circuits sampling)\u554f\u984c\u3002\u9019\u4e9b\u53d6\u6a23\u554f\u984c\u7528\u53e4\u5178\u96fb\u8166\u5f88\u96e3\u89e3\u6c7a\uff0c\u800c\u9019\u4e9b\u7814\u7a76\u63d0\u51fa\u4e86\u8b49\u64da\uff0c\u8aaa\u660e\u91cf\u5b50\u96fb\u8166\u5c55\u73fe\u51fa\u9060\u8d85\u904e\u50b3\u7d71\u8d85\u7d1a\u96fb\u8166\u7684\u8a08\u7b97\u6548\u7387\u3002\u76f8\u4fe1\u672a\u4f86\u5728\u76f8\u95dc\u7814\u7a76\u7684\u63a8\u9032\uff0c\u4eba\u5011\u8ddd\u96e2\u5be6\u73fe\u771f\u6b63\u7684\u91cf\u5b50\u300c\u9738\u6b0a\u300d\u53c8\u66f4\u8fd1\u4e86\u4e00\u6b65\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0bf7313 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0bf7313\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1e842a5\" data-id=\"1e842a5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-94ee1d0 elementor-widget elementor-widget-spacer\" data-id=\"94ee1d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e0812f2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e0812f2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fb6099f\" data-id=\"fb6099f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4ae1d2a elementor-widget elementor-widget-image\" data-id=\"4ae1d2a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-1024x682.jpg\" class=\"attachment-large size-large wp-image-5036\" alt=\"\u91cf\u5b50\u96fb\u8166\u793a\u610f\u5716\" srcset=\"https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-1024x682.jpg 1024w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-300x200.jpg 300w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-768x512.jpg 768w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-391x260.jpg 391w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-1536x1023.jpg 1536w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2-600x400.jpg 600w, https:\/\/qt.ntu.edu.tw\/qoa\/wp-content\/uploads\/2021\/12\/review_quantum_computer2.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">\u91cf\u5b50\u96fb\u8166\u793a\u610f\u5716<br> (\u4f5c\u8005: IBM Research;  \u51fa\u8655: https:\/\/www.flickr.com\/photos\/ibm_research_zurich\/50252942522)<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2886724 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2886724\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cfb3d74\" data-id=\"cfb3d74\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d290f06 elementor-widget elementor-widget-spacer\" data-id=\"d290f06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9b2c014 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9b2c014\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8aa33df\" data-id=\"8aa33df\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e6432fe elementor-widget elementor-widget-button\" data-id=\"e6432fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/phys.org\/news\/2021-10-chinese-teams-primacy-quantum.html\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-file-alt\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">\u95b1\u8b80\u5168\u6587 <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b01d3db elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b01d3db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-887e9c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"887e9c8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-89f928d\" data-id=\"89f928d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-047f880 elementor-widget elementor-widget-heading\" data-id=\"047f880\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">\u8cc7\u6599\u4f86\u6e90<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-43009e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"43009e2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6527f4e\" data-id=\"6527f4e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d44ea1 elementor-widget elementor-widget-text-editor\" data-id=\"2d44ea1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li>Yirka, B. (2021, Oct 27). <em>Two Chinese teams claim to have reached primacy with quantum computers.<\/em> Phys.org <a href=\"https:\/\/phys.org\/news\/2021-10-chinese-teams-primacy-quantum.html\" target=\"_blank\" rel=\"noopener\">https:\/\/phys.org\/news\/2021-10-chinese-teams-primacy-quantum.html<\/a><\/li><li>Zhong, H. S., Deng, Y. H., Qin, J., Wang, H., Chen, M. C., Peng, L. C., &#8230; &amp; Pan, J. W. (2021). Phase-programmable gaussian boson sampling using stimulated squeezed light. <em>Physical Review Letters<\/em>, <em>127<\/em>(18), 180502. <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.127.180502\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1103\/PhysRevLett.127.180502<\/a><\/li><li>Wu, Y., Bao, W. S., Cao, S., Chen, F., Chen, M. C., Chen, X., &#8230; &amp; Pan, J. W. (2021). Strong quantum computational advantage using a superconducting quantum processor. <em>Physical Review Letters<\/em>, <em>127<\/em>(18), 180501. <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.127.180501\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1103\/PhysRevLett.127.180501<\/a><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u9ec3\u6587\u6ed4\uff5c\u7279\u7d04\u7de8\u8f2f<br \/>\n\u5229\u7528\u91cf\u5b50\u96fb\u8166\u89e3\u6c7a\u53e4\u5178\u96fb\u8166\u7121\u6cd5\u89e3\u6c7a\u7684\u8907\u96dc\u8a08\u7b97\u554f\u984c\uff0c\u5f9e\u800c\u5be6\u73fe\u91cf\u5b50\u512a\u52e2(quantum supremacy)\uff0c\u662f\u5404\u570b\u7814\u7a76\u5718\u968a\u52aa\u529b\u8ffd\u6c42\u7684\u76ee\u6a19\u3002\u7e7cIBM\u8207Google\u7684\u5718\u968a\u4e4b\u5f8c\uff0c\u8fd1\u65e5\u4ee5\u4e2d\u570b\u79d1\u6280\u5927\u5b78\u70ba\u4e3b\u7684\u5718\u968a\u5728\u300a\u7269\u7406\u8a55\u8ad6\u5feb\u5831\u300b\u767c\u8868\u5169\u9805\u7814\u7a76\u4e26\u5ba3\u7a31\u5be6\u73fe\u4e86\u91cf\u5b50\u512a\u52e2&#8230;<\/p>\n","protected":false},"author":3,"featured_media":5036,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118,82,65],"tags":[78],"class_list":["post-5035","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-academic-breakthrough","category-know","category-quantum-computing","tag-quantum_computer"],"_links":{"self":[{"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/posts\/5035","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/comments?post=5035"}],"version-history":[{"count":20,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/posts\/5035\/revisions"}],"predecessor-version":[{"id":13224,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/posts\/5035\/revisions\/13224"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/media\/5036"}],"wp:attachment":[{"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/media?parent=5035"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/categories?post=5035"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qt.ntu.edu.tw\/qoa\/wp-json\/wp\/v2\/tags?post=5035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}