Generation of a lattice of spin-orbit beams via coherent averaging

TL;DR

This paper presents a robust method to generate and control a lattice of spin-orbit beams with orbital angular momentum, applicable to electromagnetic and matter-wave beams, enabling advanced studies of chiral and topological materials.

Contribution

It introduces a novel, passive device-based approach for creating and manipulating a lattice of spin-orbit beams, offering an alternative to existing methods.

Findings

Successful experimental realization of optical spin-orbit beam lattice

Demonstration of control protocols for lattice characteristics

Potential applications in topological material investigations

Abstract

We describe a highly robust method, applicable to both electromagnetic and matter-wave beams, that can produce a beam consisting of a lattice of orbital angular momentum (OAM) states coupled to a two-level system. We also define efficient protocols for controlling and manipulating the lattice characteristics. These protocols are applied in an experimental realization of a lattice of optical spin-orbit beams. The novel passive devices we demonstrate here are also a natural alternative to existing methods for producing single-axis OAM and spin-orbit beams. Our techniques provide new tools for investigations of chiral and topological materials with light and particle beams.