{"id":1164,"date":"2025-09-10T01:47:13","date_gmt":"2025-09-09T17:47:13","guid":{"rendered":"http:\/\/cmli.es.ncku.edu.tw\/?p=1164"},"modified":"2025-09-18T22:12:59","modified_gmt":"2025-09-18T14:12:59","slug":"%e7%a0%94%e7%a9%b6%e6%96%b0%e7%99%bc%e7%8f%be-%e4%bb%a5%e5%85%a9%e7%b5%84%e5%af%a6%e9%a9%97%e8%a8%ad%e7%bd%ae%e5%af%a6%e7%8f%be%e9%87%8f%e5%8c%96%e9%87%8f%e5%ad%90%e5%8b%95%e5%8a%9b%e5%ad%b8-2","status":"publish","type":"post","link":"http:\/\/cmli.es.ncku.edu.tw\/?p=1164","title":{"rendered":"[2025\/09\/11] \u7814\u7a76\u65b0\u767c\u73fe\uff1a\u4ee5\u5169\u7d44\u5be6\u9a57\u8a2d\u7f6e\u5be6\u73fe\u91cf\u5316\u91cf\u5b50\u52d5\u529b\u5b78\u7279\u5fb5 [New Research Findings: Quantification of Quantum Dynamical Properties with Two Experimental Settings]"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1164\" class=\"elementor elementor-1164\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-952bb47 e-con-boxed e-flex e-con\" data-id=\"952bb47\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c69dfca elementor-widget elementor-widget-text-editor\" data-id=\"c69dfca\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 28-05-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>\u63cf\u8ff0\u91cf\u5b50\u52d5\u529b\u5b78\u7684\u7279\u5fb5\u5c0d\u65bc\u91cf\u5316\u91cf\u5b50\u904e\u7a0b\u7684\u4efb\u610f\u7279\u6027\u81f3\u95dc\u91cd\u8981\uff0c\u4f8b\u5982\u5176\u5c55\u73fe\u91cf\u5b50\u529b\u5b78\u52d5\u529b\u5b78\u6216\u7522\u751f\u7cfe\u7e8f\u7684\u80fd\u529b\u3002\u7136\u800c\uff0c\u76ee\u524d\u7684\u65b9\u6cd5\u9700\u8981\u5927\u91cf\u7684\u5be6\u9a57\u8a2d\u7f6e\uff0c\u9019\u4e9b\u8a2d\u7f6e\u6703\u96a8\u8457\u7cfb\u7d71\u898f\u6a21\u7684\u64f4\u5927\u800c\u589e\u52a0\uff0c\u5f9e\u800c\u5c0e\u81f4\u5be6\u9a57\u8aa4\u5dee\u9020\u6210\u7684\u507d\u5f71\u3002\u6839\u64da\u6211\u5011\u6700\u65b0\u7684\u7814\u7a76\u767c\u73fe\uff0c\u5b58\u5728\u4e00\u7a2e\u8fd1\u4f3c\u512a\u5316\u65b9\u6cd5\uff0c\u8a72\u65b9\u6cd5\u50c5\u4f7f\u7528\u5169\u500b\u4e92\u4e0d\u504f\u501a\u7684\u57fa\u5e95\u4f86\u4f30\u8a08\u5c6c\u6027\u5ea6\u91cf\uff0c\u5f9e\u800c\u8a08\u7b97\u5b83\u5011\u7684\u4e0a\u4e0b\u754c\uff0c\u4e26\u91cd\u5efa\u76f8\u61c9\u7684\u904e\u7a0b\u3002\u9019\u7a2e\u7cfb\u7d71\u898f\u6a21\u7121\u95dc\u6027\u53ef\u4ee5\u9632\u6b62\u8aa4\u5dee\u7d2f\u7a4d\uff0c\u4e26\u5141\u8a31\u8868\u5fb5\u672c\u5fb5\u91cf\u5b50\u52d5\u529b\u5b78\u3002\u8207\u91cf\u5b50\u88fd\u7a0b\u5c64\u6790\u6210\u50cf\u76f8\u6bd4\uff0c\u6211\u5011\u5728\u5149\u5b50\u878d\u5408\u4e0a\u9032\u884c\u4e86\u5be6\u9a57\u9a57\u8b49\uff0c\u8b49\u660e\u4e86\u8a72\u65b9\u6cd5\u80fd\u5920\u7cbe\u78ba\u5730\u4f30\u8a08\u8cc7\u6e90\uff0c\u540c\u6642\u986f\u8457\u6e1b\u5c11\u4e86\u6240\u9700\u5be6\u9a57\u8a2d\u5b9a\u6578\u91cf\u5f9e 81 \u500b\u6e1b\u5c11\u5230 10 \u500b\u3002\u9019\u4e9b\u7d50\u679c\u8868\u660e\uff0c\u6211\u5011\u7684\u65b9\u6cd5\u975e\u5e38\u9069\u5408\u4f30\u8a08\u5f9e\u6676\u7247\u7d1a\u91cf\u5b50\u8655\u7406\u5668\u5230\u9577\u8ddd\u96e2\u91cf\u5b50\u7db2\u8def\u7b49\u67b6\u69cb\u4e2d\u7684\u52d5\u614b\u7279\u6027\u3002\u7d30\u7bc0\u53ef\u53c3\u95b1\u9810\u5370\u672c\uff1a<a class=\"customize-unpreviewable\" href=\"https:\/\/arxiv.org\/abs\/2508.19668\">https:\/\/arxiv.org\/abs\/2508.19668<\/a><\/p><p>Characterizing quantum dynamics is essential for quantifying arbitrary properties of a quantum process&#8212;such as its ability to exhibit quantum-mechanical dynamics or generate entanglement. However, current methods require a number of experimental settings that increases with system size, leading to artifacts from experimental errors. Here, we propose an approximate optimization method that estimates property measures using only two mutually unbiased bases to compute their lower and upper bounds, and to reconstruct the corresponding processes. This system-size independence prevents error accumulation and allows characterization of the intrinsic quantum dynamics. Compared with quantum process tomography, we experimentally validate our method on photonic fusion and controlled-NOT operations, demonstrating accurate resource estimation while substantially reducing the number of required Pauli experimental settings: from 81 to 10 for the photonic fusion and to 2 for the controlled-NOT. These results show that our method is well-suited for estimation of dynamical properties in architectures ranging from chip-scale quantum processors to long-distance quantum networks. <br \/>Please refer to the following link for more details: <a href=\"https:\/\/arxiv.org\/abs\/2508.19668\" target=\"_blank\" rel=\"noopener\">https:\/\/arxiv.org\/abs\/2508.19668<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03afcb6 elementor-widget elementor-widget-image\" data-id=\"03afcb6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 28-05-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"345\" src=\"http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-1024x345.png\" class=\"attachment-large size-large wp-image-1143\" alt=\"\" srcset=\"http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-1024x345.png 1024w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-300x101.png 300w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-150x51.png 150w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-768x259.png 768w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-1536x518.png 1536w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-2048x691.png 2048w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-650x219.png 650w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-1300x438.png 1300w, http:\/\/cmli.es.ncku.edu.tw\/wp-content\/uploads\/2025\/09\/expt_dontscale-600x202.png 600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" loading=\"lazy\" \/ loading=\"lazy\">\t\t\t\t\t\t\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\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u63cf\u8ff0\u91cf\u5b50\u52d5\u529b\u5b78\u7684\u7279\u5fb5\u5c0d\u65bc\u91cf\u5316\u91cf\u5b50\u904e\u7a0b\u7684\u4efb\u610f\u7279\u6027\u81f3\u95dc\u91cd\u8981\uff0c\u4f8b\u5982\u5176\u5c55\u73fe\u91cf\u5b50\u529b\u5b78\u52d5\u529b\u5b78\u6216\u7522\u751f\u7cfe\u7e8f\u7684\u80fd\u529b\u3002\u7136\u800c\uff0c\u76ee\u524d\u7684<\/p>\n","protected":false},"author":1,"featured_media":1143,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[3],"tags":[],"class_list":["post-1164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-output"],"_links":{"self":[{"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/posts\/1164","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1164"}],"version-history":[{"count":20,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/posts\/1164\/revisions"}],"predecessor-version":[{"id":1339,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/posts\/1164\/revisions\/1339"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=\/wp\/v2\/media\/1143"}],"wp:attachment":[{"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1164"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/cmli.es.ncku.edu.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}