Light for Quantum communication: Narrowband, entangled photon pairs


Light for Quantum Communication: Narrowband, Entangled Photon Pairs

Gurpreet Kaur Gulati

NASA Jet Propulsion Laboratory

        Many proposed quantum-photonic networks are based on single photons carrying information between atomic nodes. An efficient information transfer requires strong interaction between the atoms and the photons for which the photons should have an appropriate frequency bandwidth and a temporal shape. In this talk I will present a source of narrowband heralded single photons based on four wave mixing process in a cold atomic ensemble, and shaping them for interaction with a single atom.
        I will also talk about a research proposal to build a miniaturized, portable, cost effective photon pair source which is prequisite for quantum repeaters protocol and discuss ways to generate multipartite entangled states using atoms.