Subradiant Decay in 2D and 3D Atomic Arrays

TL;DR

This paper investigates subradiant decay in large 2D and 3D atomic arrays, analyzing eigenmodes and finite-size effects to inform applications in quantum memories and topological photonics.

Contribution

It introduces a method to characterize eigenmodes in large ordered arrays, highlighting finite-size effects on subradiance in 2D and 3D systems.

Findings

Finite-size effects significantly influence subradiant lifetimes.

Ordered arrays exhibit distinct eigenmode properties compared to disordered systems.

Results suggest potential for quantum memory and topological applications.

Abstract

Subradiance is a phenomenon where coupled emitters radiate light at a slower rate than independent ones. While its observation was first reported in disordered cold atom clouds, ordered subwavelength arrays of emitters have emerged as promising platforms to design highly cooperative optical properties based on dipolar interactions. In this work we characterize the eigenmodes of 2D and 3D regular arrays, using a method which can be used for both infinite and very large systems. In particular, we show how finite-size effects impact the lifetimes of these large arrays. Our results may have interesting applications for quantum memories and topological effects in ordered atomic arrays.