{"id":498,"date":"2024-04-16T14:58:00","date_gmt":"2024-04-16T12:58:00","guid":{"rendered":"https:\/\/gqm.lpl.univ-paris13.fr\/?p=498"},"modified":"2025-11-04T14:13:28","modified_gmt":"2025-11-04T13:13:28","slug":"measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms","status":"publish","type":"post","link":"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2024\/04\/16\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\/","title":{"rendered":"Measuring bipartite spin correlations of lattice-trapped dipolar atoms"},"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>Using this method, we observe that out-of-equilibrium dynamics driven by long-range dipolar interactions lead to spin anticorrelations between the two spatially separated subsystems. Our bipartite measurements reveal a subtle interplay between the anisotropy of the 3D dipolar interactions and that of the lattice structure, without requiring single-site addressing. <\/p>\n\n\n\n<p>We compare our results to theoretical predictions based on a truncated cumulant expansion and a new cluster semiclassical method that we use to investigate correlations at the microscopic scale. Comparison with a high-temperature analytical model reveals quantum thermalization at a high negative spin temperature.<\/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-42b45dd2\" 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-Measuring-bipartite-spin-correlations-721850.svg\" alt=\"\" class=\"wp-image-1585\" style=\"border-style:none;border-width:0px;border-radius:10px\"\/><figcaption class=\"wp-element-caption\">The spin dynamics take place in a 532 nm 3D anisotropic lattice, which is dominated by a combination of ferromagnetic (FM) and anti-ferromagnetic (AFM) dipolar couplings in the XZ plane. The addition of a infrared (IR) laser at the end of the dynamics creates a double-well structure that gives rise to two spin subsystems A and B.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>We demonstrate a bipartition technique using a superlattice architecture to access correlations between alternating planes of a mesoscopic array of spin-3 chromium atoms trapped in a 3D optical lattice.<br \/>\n<a href=\"https:\/\/doi.org\/10.48550\/arXiv.2404.10531\">arXiv:2404.10531 (2024)<\/a>  \/  <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.133.203401\">Phys. Rev. Lett. 133, 203401 (2024)<\/a><\/p>\n","protected":false},"author":3,"featured_media":1585,"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":[57,26,61,52,58,49,91],"class_list":["post-498","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article","category-chromium","tag-ana-maria-rey","tag-bruno-laburthe-tolra","tag-laurent-vernac","tag-sean-robert-muleady","tag-tommaso-roscilde","tag-youssef-aziz-alaoui","tag-youssef-trifa"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Measuring bipartite spin correlations of lattice-trapped dipolar atoms - 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\/2024\/04\/16\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Measuring bipartite spin correlations of lattice-trapped dipolar atoms - Magnetic Quantum Gases\" \/>\n<meta property=\"og:description\" content=\"We demonstrate a bipartition technique using a superlattice architecture to access correlations between alternating planes of a mesoscopic array of spin-3 chromium atoms trapped in a 3D optical lattice. arXiv:2404.10531 (2024) \/ Phys. Rev. Lett. 133, 203401 (2024)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2024\/04\/16\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\/\" \/>\n<meta property=\"og:site_name\" content=\"Magnetic Quantum Gases\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-16T12:58:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-04T13:13:28+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=\"1 minute\" \/>\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\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/\"},\"author\":{\"name\":\"Benjamin PASQUIOU\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#\\\/schema\\\/person\\\/edd1441f419c30858a44ed007fc1fc79\"},\"headline\":\"Measuring bipartite spin correlations of lattice-trapped dipolar atoms\",\"datePublished\":\"2024-04-16T12:58:00+00:00\",\"dateModified\":\"2025-11-04T13:13:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/\"},\"wordCount\":156,\"publisher\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Measuring-bipartite-spin-correlations-721850.svg\",\"keywords\":[\"Ana Maria Rey\",\"Bruno Laburthe-Tolra\",\"Laurent Vernac\",\"Sean Robert Muleady\",\"Tommaso Roscilde\",\"Youssef Aziz Alaoui\",\"Youssef Trifa\"],\"articleSection\":[\"Article\",\"Chromium\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/\",\"name\":\"Measuring bipartite spin correlations of lattice-trapped dipolar atoms - Magnetic Quantum Gases\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Measuring-bipartite-spin-correlations-721850.svg\",\"datePublished\":\"2024-04-16T12:58:00+00:00\",\"dateModified\":\"2025-11-04T13:13:28+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#primaryimage\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Measuring-bipartite-spin-correlations-721850.svg\",\"contentUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Article-Measuring-bipartite-spin-correlations-721850.svg\",\"width\":300,\"height\":300,\"caption\":\"The spin dynamics take place in a 532 nm 3D anisotropic lattice, which is dominated by a combination of ferromagnetic (FM) and anti-ferromagnetic (AFM) dipolar couplings in the XZ plane. The addition of a infrared (IR) laser at the end of the dynamics creates a double-well structure that gives rise to two spin subsystems A and B.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/2024\\\/04\\\/16\\\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Measuring bipartite spin correlations of lattice-trapped dipolar atoms\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#website\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/\",\"name\":\"Magnetic Quantum Gases\",\"description\":\"Explore quantum magnetism with ultra-cold atom gases.\",\"publisher\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#organization\",\"name\":\"Magnetic Quantum Gases\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-Condensation_512px.png\",\"contentUrl\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-Condensation_512px.png\",\"width\":512,\"height\":512,\"caption\":\"Magnetic Quantum Gases\"},\"image\":{\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/#\\\/schema\\\/person\\\/edd1441f419c30858a44ed007fc1fc79\",\"name\":\"Benjamin PASQUIOU\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f830cb90b39b89a47400329189c692407a76ff849fbc89ac7df353e712db23e0?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f830cb90b39b89a47400329189c692407a76ff849fbc89ac7df353e712db23e0?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f830cb90b39b89a47400329189c692407a76ff849fbc89ac7df353e712db23e0?s=96&d=mm&r=g\",\"caption\":\"Benjamin PASQUIOU\"},\"url\":\"https:\\\/\\\/gqm.lpl.univ-paris13.fr\\\/index.php\\\/author\\\/benjamin-pasquiou\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Measuring bipartite spin correlations of lattice-trapped dipolar atoms - Magnetic Quantum Gases","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/gqm.lpl.univ-paris13.fr\/index.php\/2024\/04\/16\/measuring-bipartite-spin-correlations-of-lattice-trapped-dipolar-atoms\/","og_locale":"en_US","og_type":"article","og_title":"Measuring bipartite spin correlations of lattice-trapped dipolar atoms - Magnetic Quantum Gases","og_description":"We demonstrate a bipartition technique using a superlattice architecture to access correlations between alternating planes of a mesoscopic array of spin-3 chromium atoms trapped in a 3D optical lattice. arXiv:2404.10531 (2024) \/ Phys. 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