{"id":78925,"date":"2026-11-01T15:16:43","date_gmt":"2026-11-01T13:16:43","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=78925"},"modified":"2026-11-02T17:25:57","modified_gmt":"2026-11-02T15:25:57","slug":"28-09-2026-thomas-bunel-optical-frequency-comb-in-kerr-resonators-toward-metrological-applications-2-2-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/a-la-une\/28-09-2026-thomas-bunel-optical-frequency-comb-in-kerr-resonators-toward-metrological-applications-2-2-2.html","title":{"rendered":"18\/11\/2026 &#8211; Professor Antonio Garc\u00eda-Mart\u00edn &#8211; \u201cVO\u2082 Phase Control and qBIC-Enhanced Non-Reciprocity in Nanophotonic Metasurfaces\u201d"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-muc9vv0k-d13832ed90a8fe809137a59d28d841ae\">\n#top .av-special-heading.av-muc9vv0k-d13832ed90a8fe809137a59d28d841ae{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-muc9vv0k-d13832ed90a8fe809137a59d28d841ae .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-muc9vv0k-d13832ed90a8fe809137a59d28d841ae .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-muc9vv0k-d13832ed90a8fe809137a59d28d841ae av-special-heading-h2  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  av-linked-heading'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class='special_amp'>\u201c<\/span>VO\u2082 Phase Control and qBIC-Enhanced Non-Reciprocity in Nanophotonic Metasurfaces<span class='special_amp'>\u201d<\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div  class='hr av-1lex3u2-c2349f429b2405ded7730d09b70a99e2 hr-default  avia-builder-el-1  el_after_av_heading  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jr8xdc0k-f45957c59fbd4c9360c3a87c0ebb1705 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><\/h3>\n<blockquote>\n<p><strong>Professor Antonio Garc\u00eda-Mart\u00edn<br \/>\nfrom the Instituto de Micro y Nanotecnolog\u00eda (IMN-CNM, CSIC) in Madrid<br \/>\n<\/strong><\/p>\n<p><strong>Mercredi 18\/11\/2026<\/strong><br \/>\n14h &#8211; IEMN Laboratoire Central -Salle du conseil<\/p>\n<\/blockquote>\n<\/div><\/section>\n<div  class='hr av-11fer9m-a4592db8614531f2893714ed51bdad5e hr-default  avia-builder-el-3  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jrc1e691-b0caadc439d5da5d03c8c5ff85c43064 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div><\/div>\n<div><b><span style=\"font-size: small;\">Abstract :<\/span><\/b><\/div>\n<div>In this presentation I will address engineered metasurfaces involving external tuning via vanadium dioxide (VO2) and non-reciprocal enhancement via quasi-bound states in the continuum (qBICs).<br \/>\nVO2 exhibits a notable insulator-to-metal transition at 68\u00b0C with a dramatic change in electrical resistivity, enabling applications in photodetection and bolometry. Two VO2-based systems are examined: arrays of gold (Au) nanodisks embedded in VO2 thin films to reduce the laser power needed for phase transition by 30% through localized plasmonic field enhancement[1]; and perforated Au films with sub-micron slits on VO2 to enable <a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-78928\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia.jpg\" alt=\"\" width=\"128\" height=\"128\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia.jpg 128w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia-80x80.jpg 80w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia-12x12.jpg 12w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/antonio-garcia-36x36.jpg 36w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/a>temperature-controlled reflectance modulation from 90% to 10%, acting as optical valves[2].In parallel, qBIC phenomena in tilted silicon (Si) nanodisks and n-doped indium antimonide (InSb) micropillar metasurfaces are investigated. Overlapping dipolar resonances produce dark and asymmetric qBICs at modified Brewster angles, resulting in cloaked excitation with strong near-field enhancement and minimal reflection[3]. In magneto-optical InSb metasurfaces under external magnetic fields, qBICs enhance non-reciprocal cross-polarization coupling, tunable via structural tilting. These effects facilitate low-power, tunable optical switching and amplified magneto-optical responses[4].Together, these studies demonstrate how structural design, resonance hybridization, and external stimuli such as temperature and magnetic fields enable novel, tunable nanophotonic devices with enhanced light\u2013matter interactions.References<\/p>\n<p>[1] Z. Fang et al., Surfaces &amp; Interfaces 62, 106145 (2025)<br \/>\n[2] A. Garcia-Martin, et al., Physical Review Research 7, 023301 (2025)<br \/>\n[3] L. Hidalgo-Arteaga et al., Laser Photonics Rev. 19, 2500799 (2025)<br \/>\n[4] B. Castillo Lopez de Larrinzar, et al., \u00a0Journal of Physics: Photonics 8, 035027 (2026)<\/p>\n<\/div>\n<p><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=LOADED&amp;custom1=www.iemn.fr&amp;custom2=\/wp-admin\/post.php&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=BEFORE_OPTOUT_REQ&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=FINISHED&amp;custom1=www.iemn.fr&amp;t=1548423287430\" \/><\/p>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":73855,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,8],"tags":[],"class_list":["post-78925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=78925"}],"version-history":[{"count":6,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78925\/revisions"}],"predecessor-version":[{"id":78931,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78925\/revisions\/78931"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/73855"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=78925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=78925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=78925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}