{"id":37734,"date":"2019-07-20T14:56:45","date_gmt":"2019-07-20T12:56:45","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=37734"},"modified":"2019-10-03T12:04:08","modified_gmt":"2019-10-03T10:04:08","slug":"seminar-stokes-sideband-pumping-in-microwave-optomechanics","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/seminar-stokes-sideband-pumping-in-microwave-optomechanics.html","title":{"rendered":"Seminar : Stokes sideband pumping in microwave optomechanics"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_171jipxmckwah\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-37734'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kyhaw6-cc5c8d9da8d3411baf20151d1db3e377\">\n#top .av-special-heading.av-kyhaw6-cc5c8d9da8d3411baf20151d1db3e377{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-kyhaw6-cc5c8d9da8d3411baf20151d1db3e377 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-kyhaw6-cc5c8d9da8d3411baf20151d1db3e377 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-kyhaw6-cc5c8d9da8d3411baf20151d1db3e377 av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_textblock  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Seminar : Stokes sideband pumping in microwave optomechanics <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-jr8xdc0k-5d9fce3856e0d3831eaebc0e92dfd7a1'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><\/h3>\n<blockquote>\n<p><strong><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/09\/Inst_Neel.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright  wp-image-37742\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/09\/Inst_Neel.gif\" alt=\"\" width=\"128\" height=\"87\" \/><\/a>02\/10\/2019<\/strong><br \/>\n10h30 \u2013 IEMN Laboratoire Central \u2013 Salle du conseil<br \/>\nCampus Cit\u00e9 Scientifique \u2013 Villeneuve d\u2019Ascq<\/p>\n<p><strong>Dr. Eddy Collin &amp; Dylan CATTIAUX<br \/>\n<\/strong>Grenoble Alpes University, N\u00e9el Institute<\/p>\n<\/blockquote>\n<\/div><\/section>\n<section  class='av_textblock_section av-jrc1e691-dac7fa2f015f2b8a2aa82bf056f56818'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Abstract:<\/strong><\/p>\n<p>We report on microwave optomechanics measurements performed on a nuclear adiabatic demagnetization cryostat, whose temperature is determined by accurate thermometry from below 500 \u03bcK to about 1 Kelvin. We describe a method for accessing the on-chip temperature, building on the blue-detuned parametric instability and a standard microwave setup. The capabilities and sensitivity of both the experimental arrangement and the developed techniques are demonstrated with two different devices: a doubly-clamped beam [1] and a drumhead resonator [2]. We report on an unstable intrinsic driving force in the coupled microwave-mechanical system acting on the mechanics that appears at (very) low temperatures. The origin of this phenomenon remains unknown, and deserves theoretical input. It prevents us from performing reliable experiments below typically 10-30 mK; however no evidence of thermal decoupling is observed, and we show that this feature is present in both devices sharing the same microwave technology, at different levels of strengths. We speculate how the mechanism could be linked to atomic-scale two level systems. Beyond the Stokes sideband pumping instability, we report on self-sustained oscillations for both devices. We analyze the results in the framework of an extended optomechanical theory including Duffing-type and higher-order coupling nonlinear terms. Quantitative understanding of this regime is reached for the drumhead, and should enable its use as a new resource for microwave electronic circuits and quantum non demolition measurements. The described microwave\/microkelvin facility is part of the EMP platform [1], and shall be used for further experiments within and below the millikelvin range.<\/p>\n<p><div  class='avia-button-wrap &rsquo;av-rpqvoq&rsquo;-9485b95813e785c6b98673614a6e5e73-wrap avia-button-&rsquo;left&rsquo;  avia-builder-el-4  avia-builder-el-no-sibling'><a href='\/en\/&rsquo;mailto:<em>x<\/em>in.zhou@iemn.fr<em>>&rsquo;\/'  class='avia-button &rsquo;av-rpqvoq&rsquo;-9485b95813e785c6b98673614a6e5e73 av-link-btn avia-icon_select-&rsquo;yes&rsquo; avia-size-&rsquo;small&rsquo; avia-position-&rsquo;left&rsquo; avia-color-&rsquo;silver&rsquo;'   aria-label=\"Contact us\"><span class='avia_iconbox_title' >Contact us<\/span><\/a><\/div><\/em><\/p>\n<p><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&#038;wid=51824&#038;sid=&#038;tid=5953&#038;rid=LOADED&#038;custom1=www.iemn.fr&#038;custom2=\/wp-admin\/post.php&#038;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&#038;wid=51824&#038;sid=&#038;tid=5953&#038;rid=BEFORE_OPTOUT_REQ&#038;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&#038;wid=51824&#038;sid=&#038;tid=5953&#038;rid=FINISHED&#038;custom1=www.iemn.fr&#038;t=1548423287430\" \/><\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":37752,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-37734","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37734","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=37734"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37734\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/37752"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=37734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=37734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=37734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}