{"147541":{"#nid":"147541","#data":{"type":"event","title":"School of Physics Hard Condensed Matter and AMO Seminar with Ian Spielman","body":[{"value":"\u003Cp\u003EHere I present our experimental work synthesizing static gauge fields for ultracold neutral atoms (bosonic and fermionic alkali atoms). \u0026nbsp;I will discuss this gauge field in the language of spin-orbit coupling where it consists of an equal sum of Rashba and Dresselhaus couplings. In experiment, we couple two internal states of our alkali atoms with a pair of ``Raman\u0027\u0027 lasers and load our degenerate quantum gas into the resulting adiabatic eigenstates. \u003Cbr \/\u003E \u003Cbr \/\u003E For a Bose gas, a function of the Raman laser strength, a new exchange-driven interaction between the two dressed spins develops, which drives a (quantum) phase transition from a state where the two dressed spin states spatially mix, to one where they phase separate. \u0026nbsp; Going beyond this simple modification to the spin-dependent interaction, we show that in the limit of large laser intensity, the particles act as free atoms, but interact with contributions from higher even partial waves.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EGuage Fields with Cold Atoms\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Guage Fields with Cold Atoms"}],"uid":"27664","created_gmt":"2012-08-20 10:29:24","changed_gmt":"2016-10-08 01:59:28","author":"Alison Morain","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2012-09-06T15:00:00-04:00","event_time_end":"2012-09-06T16:00:00-04:00","event_time_end_last":"2012-09-06T16:00:00-04:00","gmt_time_start":"2012-09-06 19:00:00","gmt_time_end":"2012-09-06 20:00:00","gmt_time_end_last":"2012-09-06 20:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"related_links":[{"url":"http:\/\/www.physics.gatech.edu\/seminars-colloquia\/series\/hard-condensed-matter-and-atomic-molecular-optical\/ian-spielman-20120906","title":"http:\/\/www.physics.gatech.edu\/seminars-colloquia\/series\/hard-condensed-matt..."}],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"41011","name":"Cold Atoms"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EHost: Chandra Raman - \u003Ca href=\u0022mailto:chandra.raman@physics.gatech.edu\u0022\u003Echandra.raman@physics.gatech.edu\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003ECoordinator: Alison Morain - \u003Ca href=\u0022mailto:alison.morain@physics.gatech.edu\u0022\u003Ealison.morain@physics.gatech.edu\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}