Event DetailsEvent Dates: Friday, July 24, 2015 - 12:30pmSeminar Location: JILA X317Speaker Name(s): Dan Stamper-KurnSpeaker Affiliation(s): Univ. of California, Berkeley Seminar Type/SubjectScientific Seminar Type: JILA Public SeminarEvent Details & Abstract: Cavity quantum electrodynamics generally lets one direct the interactions between polarizable objects and light, increasing the relevance of a single optical mode. As such, optical cavities improve our ability to extract information about a quantum object through its interaction with light, and also our ability to cause quantum objects to interact with one another remotely by exchanging photons. I will discuss studies of cavity optomechanics using gases of ultracold atoms trapped within a high finesse Fabry-Perot resonator. Cavity-based measurement allows us to detect forces at the standard quantum limit, a long-time goal for optomechanical systems. We also demonstrate coherent coupling between distinct mechanical objects, mediated by cavity photons, and also characterize the simultaneous influence of measurement on this interaction. Finally, I will discuss analogues between cavity optomechancs and the dynamics of spins trapped within a driven optical cavity.