QUANTOP seminar By Jörg Helge Müller (NBI)

 Atomic ensembles coupled to optical resonators are a   popular research subject since the early days of quantum optics and have served as a model system to explore many aspects of laser physics. Pushing the parameters to the more exotic regime of broad linewidth cavities housing atoms with narrow transitions provides access to the physics of superradiance. In the talk, I will present recent results from the Quantum Metrology group on quasi-continuous lasing and on cavity-assisted optical Ramsey spectroscopy with the kHz wide intercombination transition in Strontium-88.   Possible applications for optical frequency standards and future prospects for quantum simulation with improved systems will be discussed.