{"id":77411,"date":"2026-03-17T15:46:37","date_gmt":"2026-03-17T13:46:37","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=77411"},"modified":"2026-03-17T15:48:17","modified_gmt":"2026-03-17T13:48:17","slug":"seminaire-mathieu-lizee-20-03-2026-glassy-nanofluidics-how-collective-liquid-dynamics-shape-interfacial-transport-and-reactivity-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/a-la-une\/seminaire-mathieu-lizee-20-03-2026-glassy-nanofluidics-how-collective-liquid-dynamics-shape-interfacial-transport-and-reactivity-2.html","title":{"rendered":"S\u00e9minaire : Dr. Peter D. D. Schwindt &#8211; 17\/03\/2026 &#8211; &lsquo;Recent advances in optically pumped atomic magnetometers in different regimes: Earth\u2019s field and zero field&rsquo;"},"content":{"rendered":"<div  class='flex_column av-1k9xbuf-ce4bf976e098146004de8a7cea421bf7 av_one_full  avia-builder-el-0  avia-builder-el-no-sibling  first flex_column_div'     ><section  class='av_textblock_section av-3ta2nr-f7a41bc46da7926f9e8339b52982b72d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2 style=\"text-align: center;\"><span style=\"color: #800000;\">SEMINAIRE<\/span><\/h2>\n<hr \/>\n<h3 style=\"text-align: center;\"><\/h3>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-llwhkn-da0a4fd14c1a47faccc224e3cfd6a845'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span style=\"color: #800000;\">Dr. Peter D. D. Schwindt <\/span><\/h3>\n<p><em>(Sandia National Laboratories, Albuquerque, USA)<\/em><\/p>\n<p><strong>&lsquo;Recent advances in optically pumped atomic magnetometers in different regimes: Earth\u2019s field and zero field&rsquo;<\/strong><\/p>\n<p><em>IEMN \/ Laboratoire Central \/ Amphith\u00e9\u00e2tre Eug\u00e8ne Constant &#8211; 17\/03\/2026<\/em><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmuo38em-be1064c6ede63b54d82ab0d14d3231e5\">\n#top .hr.av-mmuo38em-be1064c6ede63b54d82ab0d14d3231e5{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-mmuo38em-be1064c6ede63b54d82ab0d14d3231e5 .hr-inner{\nwidth:400px;\nmax-width:45%;\n}\n<\/style>\n<div  class='hr av-mmuo38em-be1064c6ede63b54d82ab0d14d3231e5 hr-custom  avia-builder-el-3  el_after_av_textblock  el_before_av_textblock  hr-center hr-icon-yes'><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><span class='av-seperator-icon' aria-hidden='true' data-av_icon='\ue808' data-av_iconfont='entypo-fontello'><\/span><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-v02p6f-253e39c72423ac88ed9f060c805d6f8c'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong><span style=\"color: #800000;\">Abstract:<\/span><\/strong><\/p>\n<p>While optically pumped magnetometers (OPMs) fundamentally rely on the precession of an atomic spin in a magnetic field, devices operating at the Earth\u2019s field range and at zero field practically result in quite different devices. An Earth\u2019s field OPM measures the spin precession (Larmor) frequency of the atom to determine the magnetic field, and its output provides the magnitude of the field. In contrast, a zero-field OPM measures the very small angular displacement of the atomic spin due to a small field. Because of the geometry of the device, the angular measure results in the determination of a single vector component of the field. I will describe two of our efforts in these OPMs. In our Earth\u2019s field OPM, we are looking to implement spin squeezing to realize an improvement of the bandwidth of the device due to measurement of the spin projection noise below the standard quantum limit. In our zero-field OPM, we are developing devices to measure the magnetic fields produced by active neurons in the human brain. Here, we are developing arrays of devices to locate active regions of the brain for a given stimulation of the human subject.<\/p>\n<p><strong><span style=\"color: #800000;\">Biography:<\/span><\/strong><\/p>\n<p>Dr. Peter Schwindt is a Distinguished Member of the Technical Staff at Sandia National Laboratories and has been engaged in optical and atomic physics research since 1997 with an emphasis in applying the principles of atomic physics to sensing and timing problems. One of his primary focus areas is OPMs, developing techniques to both miniaturize them and improve their sensitivity and bandwidth. Since 2007, he led a project to develop OPMs for application to MEG. Dr. Schwindt has also worked on multiple atomic clock projects, developing trapped Yb ion microwave and optical clocks, focusing on techniques for miniaturization and low-power-consumption while maintaining excellent long-term frequency stability. Dr. Schwindt has also led a project to miniaturize and extend the dynamic range of an atom interferometer accelerometer while developing a photonic-integrated-circuit-based laser system. Prior to coming to Sandia National Laboratories in 2006, Dr. Schwindt worked as a National Research Council post-doctoral fellow at the National Institute of Standards and Technology. His research there focused on the development of chip-scale atomic clocks and magnetometers. He received his Ph.D. in 2003 from the University of Colorado at Boulder.<br \/>\nSandia National Laboratories is a multimission laboratory managed and operated by National Technology &amp; Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy\u2019s National Nuclear Security Administration under contract DE-NA0003525.<\/p>\n<\/div><\/section><\/p><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":73855,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,313],"tags":[],"class_list":["post-77411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-accueil-etudiants"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/77411","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=77411"}],"version-history":[{"count":5,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/77411\/revisions"}],"predecessor-version":[{"id":77414,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/77411\/revisions\/77414"}],"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=77411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=77411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=77411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}