Nanophotonic emitter-photon interfaces for demonstrating quantum advantage

Ravijet Uppu
University of Iowa

Abstract

Photons are essential for transmitting quantum information given the ease with which we can generate, manipulate, and detect them. While several physical systems such as atoms, ions, and quantum dots were explored as candidate photon sources over the past few decades, none could achieve the steep performance metrics necessary for quantum advantage demonstrations. A simple reason behind the shortcoming is inefficiency, i.e., the ease with which we could lose a photon. I will illustrate how a carefully designed nanophotonic light-matter interface can overcome these shortcomings to realize an efficient and coherent single-photon source that will enable transformative capabilities in photonic quantum technologies. I will conclude with a discussion on the new avenues that wavefront control opens in nanophotonic light-matter interfaces.