Influence of Disorder on Electromagnetically Induced Transparency in Chiral Waveguide Quantum Electrodynamics

TL;DR

This paper investigates how disorder affects electromagnetically induced transparency in a chiral waveguide quantum system, revealing the impact on photon transport and localization, with implications for quantum communication technologies.

Contribution

It introduces a detailed analysis of disorder effects on EIT in chiral waveguides, highlighting the role of atomic position and frequency disorder on photon localization.

Findings

Chirality influences localization of photons in disordered atomic lattices.

Disorder in atomic transition frequencies affects EIT transparency.

Spatial localization of photons depends on the degree of disorder and chirality.

Abstract

We study single photon transport in a one-dimensional disordered lattice of three-level atoms coupled to an optical waveguide. In particular, we study atoms of \Lambda-type that are capable of exhibiting electromagnetically induced transparency (EIT) and separately consider disorder in the atomic positions and transition frequencies. We mainly address the question of how preferential emission into waveguide modes (chirality) can influence the formation of spatially localized states. Our work has relevance to experimental studies of cold atoms coupled to nanoscale waveguides and has possible applications to quantum communications.