{"id":39773,"date":"2025-02-13T09:02:35","date_gmt":"2025-02-13T01:02:35","guid":{"rendered":"https:\/\/www.physics.nus.edu.sg\/?p=39773"},"modified":"2025-02-18T13:52:41","modified_gmt":"2025-02-18T05:52:41","slug":"deep-thermalization-in-gaussian-continuous-variable-quantum-systems","status":"publish","type":"post","link":"https:\/\/www.physics.nus.edu.sg\/deep-thermalization-in-gaussian-continuous-variable-quantum-systems\/","title":{"rendered":"Deep Thermalization in Gaussian Continuous-Variable Quantum Systems"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2025\/02\/liu-chang-pic-cropped-280x300.jpg\" width=\"552\" height=\"592\" class=\"\" \/><\/p>\n<p>Deep thermalization is an emergent universal behaviour occurring in the equilibration dynamics of quantum many-body systems, which goes beyond regular thermalization. Dr. Liu Chang and graduate student Huang Qi, led by Prof. Ho Wen Wei, considered a system of a collection of bosonic particles (in more technical terms, \u201ccontinuous-variable systems\u201d), and studied the distribution of post-measurement wavefunctions arising after complex entangling dynamics, beginning from simple Gaussian states. After long times, they predicted that that the wavefunctions are distributed in a novel way over phase space: they are unentangled (i.e. are coherent-states) and have random fluctuations in particle number (i.e. displacements) in a way that aligns with a generalized maximum entropy principle. Their findings, which harnessed the power of quantum information theory in uncovering new physical principles, were published in Phys. Rev. Lett. 133, 260401 (Dec 2024).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Deep thermalization is an emergent universal behaviour occurring in the equilibration dynamics of quantum many-body systems, which goes beyond regular&#8230;<\/p>\n","protected":false},"author":77,"featured_media":39763,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[84],"tags":[],"class_list":["post-39773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nus-physics-breakthrough-of-the-year-2024"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/posts\/39773"}],"collection":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/users\/77"}],"replies":[{"embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/comments?post=39773"}],"version-history":[{"count":13,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/posts\/39773\/revisions"}],"predecessor-version":[{"id":39840,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/posts\/39773\/revisions\/39840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/media\/39763"}],"wp:attachment":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/media?parent=39773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/categories?post=39773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/tags?post=39773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}