Waveguide quantum electrodynamics: Collective radiance and photon-photon correlations

Dr. Ivan Iorsh
ITMO University

Abstract

Ability for the on-demand generation and manipulation of non-classical states of light is a cornerstone of scalable quantum information processing. In my talk, I will describe how emerging field of waveguide quantum electrodynamics (WQED), studying interaction of photons propagating in a waveguide with localized quantum emitters, paves new routes towards flexible control over the photon-photon correlations. In the first, introductory part of the talk, I will describe what are the entangled photon states and how they can be used for quantum information processing. I will then discuss how the distinctive features of WQED systems such as photon-mediated long range interactions between two-level systems facilitate the emergence of the strong photon-photon correlations. I will continue by reviewing the state of the art experiments, and in the final part of my talk I will give a brief overview of our recent results in this field. 

Coffee, tea will be served in STI B before the colloquium.