Majorana Bound State Cavities

TL;DR

This paper introduces a novel class of topological cavities based on Majorana bound states, offering enhanced robustness and unique scaling properties for potential applications in resilient laser devices.

Contribution

It proposes a new type of topological cavity utilizing Majorana bound states, advancing the design of defect- and perturbation-resistant laser systems.

Findings

Majorana-based cavities exhibit non-degenerate single-mode operation.

They demonstrate inherent robustness to defects and external perturbations.

The cavities show unique scaling features beneficial for laser applications.

Abstract

Cavities play a fundamental role in optical physics by providing spatio-temporal confinement of energy that facilitates light-matter interactions. They are routinely utilized in a variety of settings, ranging from lasers to spectral filters, to nonlinear wave mixers, and modulators. While their resonant properties make them suitable for sensing, in many applications, like in lasers, it is desired to alleviate their sensitivity in order to make a device more resilient to perturbations. Along these lines there have been several recent reports of using concepts from topological physics in order to design laser arrays that are inherently more robust. Here, we present a new class of topological cavities based on Majorana bound states that provide unique scaling features as well as non-degenerate single-mode behaviors. These cavities may lead to a new family of lasers and laser arrays that are robust to defects, fabrication imperfections, and external perturbations.