Cooperative quantum-optical planar arrays of atoms

TL;DR

Atomic planar arrays are a promising quantum-optical platform that enable strong, controllable light-matter interactions and mimic one-dimensional light propagation, with potential applications in quantum interfaces and light manipulation.

Contribution

This paper introduces theoretical methods for analyzing cooperative responses in atomic arrays and discusses recent developments and future applications of these arrays as quantum light-matter interfaces.

Findings

Cooperative atomic arrays can strongly control light-matter interactions.

Arrays can produce highly collimated scattering resembling 1D light propagation.

Potential for versatile quantum interfaces and light manipulation.

Abstract

Atomic planar arrays offer a novel emerging quantum-optical many-body system in which light mediates strong interactions between the atoms. The regular lattice structure provides a cooperatively enhanced light-matter coupling and allows for increased control and harnessing of these interactions. In subwavelength arrays, coherent scattering of incident light beams can be highly collimated in the forward and backward direction, resembling one-dimensional light propagation without the need for waveguides, fibers, or resonators. The atomic planar arrays share common features with fabricated metasurfaces, formed by thin nanostructured films that have shown great promise in manipulating and structuring classical light. Here we describe theoretical methods commonly employed to analyze the cooperative responses of atomic arrays and explore some recent developments and potential future applications of planar arrays as versatile quantum interfaces between light and matter.