Chirality, Band Structure and Localization in Waveguide Quantum Electrodynamics

TL;DR

This paper investigates how chirality affects photon localization in disordered waveguide quantum electrodynamics systems, highlighting the impact of atomic position and frequency disorder on photon transport and localization phenomena.

Contribution

It provides a detailed analysis of the role of chirality in photon localization within disordered atomic waveguides, a novel focus in waveguide QED research.

Findings

Chirality influences the formation of localized photonic states.

Disorder in atomic positions and transition frequencies affects photon propagation.

Chirality can enhance or suppress localization depending on disorder type.

Abstract

Architectures based on waveguide quantum electrodynamics have emerged as promising candidates for quantum networks. In this paper, we analyze the propagation of single-photons in disordered many-atom waveguides. We pay special attention to the influence of chirality (directionality of photon transport) on the formation of localized photonic states, considering separately the cases of the disorder in the atomic positions and in the atomic transition frequencies.