{"id":1753,"date":"2025-01-20T23:43:00","date_gmt":"2025-01-20T22:43:00","guid":{"rendered":"https:\/\/gqm.lpl.univ-paris13.fr\/?p=1753"},"modified":"2026-03-09T15:56:32","modified_gmt":"2026-03-09T14:56:32","slug":"probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas","status":"publish","type":"post","link":"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2025\/01\/20\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\/","title":{"rendered":"Probing coherences and itinerant magnetism in a dipolar lattice gas"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>We have used advanced dynamical decoupling techniques to efficiently suppress the sensitivity to magnetic field fluctuations. We have thus measured the spin coherence of an itinerant spin 3 Bose dipolar gas throughout a quantum phase transition from a superfluid phase to a Mott insulating phase.<\/p>\n\n\n\n<p>In the superfluid phase, a metastable ferromagnetic behavior is observed below a dynamical instability which occurs at lattice depths below the phase transition. In the insulating phase, the thermalization towards a paramagnetic state is driven by an interplay between intersite and superexchange interactions.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image aligncenter size-full has-custom-border is-style-rounded wp-duotone-unset-1\" id=\"wp-block-themeisle-blocks-image-33c2b217\" style=\"margin-top:var(--wp--preset--spacing--20);margin-right:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);margin-left:var(--wp--preset--spacing--20)\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/gqm.lpl.univ-paris13.fr\/wp-content\/uploads\/2025\/11\/Article-Probing-coherences-aa6fca.svg\" alt=\"\" class=\"wp-image-1756\" style=\"border-style:none;border-width:0px;border-radius:10px\"\/><figcaption class=\"wp-element-caption\">Our experiment reveals a dynamical instability in the SF regime, due to the dipolar coupling between magnons, and a new effect associated with DDIs in the strongly correlated itinerant regime. This experiment is made possible by a dynamic decoupling technique (DD), where \u03c0 pulses are repeatedly applied to the sample. DD considerably increases the coherence lifetime.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime.<br \/>\n<a href=\"https:\/\/doi.org\/10.48550\/arXiv.2501.11402\">arXiv:2501.11402 (2025)<\/a> \/ <a href=\"https:\/\/doi.org\/10.1103\/h3fr-chgk\"> Phys. Rev. Lett. 136, 103401 (2026) <\/a><\/p>\n","protected":false},"author":3,"featured_media":1756,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[18,63],"tags":[57,26,342,61,323,341],"class_list":["post-1753","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article","category-chromium","tag-ana-maria-rey","tag-bruno-laburthe-tolra","tag-jose-daniel-bernal","tag-laurent-vernac","tag-thomas-laupretre","tag-youcef-baamara"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Probing coherences and itinerant magnetism in a dipolar lattice gas - Magnetic Quantum Gases<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2025\/01\/20\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Probing coherences and itinerant magnetism in a dipolar lattice gas - Magnetic Quantum Gases\" \/>\n<meta property=\"og:description\" content=\"We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime. arXiv:2501.11402 (2025) \/ Phys. Rev. Lett. 136, 103401 (2026)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2025\/01\/20\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\/\" \/>\n<meta property=\"og:site_name\" content=\"Magnetic Quantum Gases\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-20T22:43:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-09T14:56:32+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin PASQUIOU\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin PASQUIOU\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/\"},\"author\":{\"name\":\"Benjamin PASQUIOU\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#\\\/schema\\\/person\\\/edd1441f419c30858a44ed007fc1fc79\"},\"headline\":\"Probing coherences and itinerant magnetism in a dipolar lattice gas\",\"datePublished\":\"2025-01-20T22:43:00+00:00\",\"dateModified\":\"2026-03-09T14:56:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/\"},\"wordCount\":152,\"publisher\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Probing-coherences-aa6fca.svg\",\"keywords\":[\"Ana Maria Rey\",\"Bruno Laburthe-Tolra\",\"Jose Daniel Bernal\",\"Laurent Vernac\",\"Thomas Laupr\u00eatre\",\"Youcef Baamara\"],\"articleSection\":[\"Article\",\"Chromium\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/\",\"name\":\"Probing coherences and itinerant magnetism in a dipolar lattice gas - Magnetic Quantum Gases\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Probing-coherences-aa6fca.svg\",\"datePublished\":\"2025-01-20T22:43:00+00:00\",\"dateModified\":\"2026-03-09T14:56:32+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2025\\\/01\\\/20\\\/probing-coherences-and-itinerant-magnetism-in-a-dipolar-lattice-gas\\\/#primaryimage\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Probing-coherences-aa6fca.svg\",\"contentUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Probing-coherences-aa6fca.svg\",\"width\":300,\"height\":300,\"caption\":\"Our experiment reveals a dynamical instability in the SF regime, due to the dipolar coupling between magnons, and a new effect associated with DDIs in the strongly correlated itinerant regime. 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