DR. DEEPAK PANDEY

Optical resonators have been the backbone of the advancement we see in terms of lasers applications within our everyday life gadgets to various domains of experimental physics. The ultimate high precision experiment in the history of mankind i.e. gravitational wave detection wouldn’t have been possible without numerous advancements in the resonator design and technology. In recent years high quality resonators coupled to atoms have been used to generate many particle quantum entangled states. Also Cavity enhanced light-matter interfaces have been ubiquitously used in quantum information processing tasks. In this talk, the speaker would like to introduce a few cavity implementations for studying cold atom physics in an optical resonator setting. Particularly the fiber-based optical resonators. These microscopic mirrors which are carved directly on an optical fiber end facet, presents a miniaturized and scalable quantum technology with far reaching implications. He will discuss the case of a single atom strongly coupled to such high quality cavity. This represents the fundamental building block for a scalable quantum system in a bottoms up approach. Our recent observations concerning the Purcell enhancement of the atomic emission in the cavity mode will be discussed. These experimental findings allowed us to use the system for storing single photons in an atom-cavity system. Finally, future prospects on the generation of scalable multi-particle entangled states with potential application in meteorology and precision experiments will be discussed.