{"587458":{"#nid":"587458","#data":{"type":"event","title":"Spin-mediated optomechanics: Quantum metrology and critical phenomena in hybrid quantum systems","body":[{"value":"\u003Ch3\u003E\u003Cstrong\u003ESchool of Physics AMO Seminar: Prof. Mukund Vengalattore, Cornell University \u003C\/strong\u003E\u003C\/h3\u003E\r\n\r\n\u003Cp\u003EI will describe our studies on hybrid quantum systems that demonstrate the interplay between an ultracold spin ensemble and a mesoscopic optomechanical system. Optomechanical systems, i.e. devices that exhibit a parametric coupling between light and a mesoscopic mechanical resonator, have emerged as a promising arena not only for ultrasensitive sensor technologies but also for fundamental studies of precision measurement, macroscopic quantum effects and decoherence.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EHowever, in contrast to ultracold atomic gases, quantum state preparation of such mesoscopic mechanical systems has proved challenging. I will describe our experimental realization of a hybrid quantum system in which an ultracold atomic gas is optically interfaced to an optomechanical system. Through this interface, the atomic gas mediates a \u0026#39;spin-photon-phonon\u0026#39; interaction that allows for new forms of nonlinear optomechanical interactions and sympathetic cooling of a mechanical resonator using the ultracold gas.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EI will show that the use of such hybrid strategies circumvents many of the limitations prevalent in conventional optomechanical systems and offers a promising route to quantum sensors that surpass the standard quantum limit. Lastly, I will describe recent results on novel phase transitions and emergent critical behavior that arise in these systems due to the interplay between coherent dynamics and dissipation.\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Spin-mediated optomechanics : Quantum metrology and critical phenomena in hybrid quantum systems"}],"uid":"27664","created_gmt":"2017-02-15 15:19:13","changed_gmt":"2017-04-13 21:12:49","author":"Alison Morain","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-03-02T15:00:00-05:00","event_time_end":"2017-03-02T16:00:00-05:00","event_time_end_last":"2017-03-02T16:00:00-05:00","gmt_time_start":"2017-03-02 20:00:00","gmt_time_end":"2017-03-02 21:00:00","gmt_time_end_last":"2017-03-02 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"960","name":"physics"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78751","name":"Undergraduate students"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003Eamorain@gatech.edu\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}