Microwave shielding with far-from-circular polarization

TL;DR

This paper proposes a microwave shielding scheme for ultracold polar molecules using far-from-circular polarization, which is more robust and easier to implement than previous methods requiring high polarization purity.

Contribution

It introduces a novel microwave shielding approach utilizing far-from-circular polarization, simplifying implementation and increasing robustness against polarization imperfections.

Findings

Effective shielding with modest static electric fields

Robustness against polarization orientation imperfections

Potential for easier experimental realization

Abstract

Ultracold polar molecules can be shielded from fast collisional losses using microwaves, but achieving the required polarization purity is technically challenging. Here, we propose a scheme for shielding using microwaves with polarization that is far from circular. The setup relies on a modest static electric field, and is robust against imperfections in its orientation.