Two-photon optical shielding of collisions between ultracold polar molecules
Quantum Physics
2025-02-12 v2
Abstract
We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used for collisional shielding onto a two-photon transition, and takes advantage of optical control techniques. In contrast to one-photon optical shielding [Phys. Rev. Lett. 125, 153202 (2020)], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for 23Na39K, should be applicable to a large class of polar diatomic molecules.
Keywords
Cite
@article{arxiv.2211.08950,
title = {Two-photon optical shielding of collisions between ultracold polar molecules},
author = {Charbel Karam and Mara Meyer zum Alten Borgloh and Romain Vexiau and Maxence Lepers and Silke Ospelkaus and Nadia Bouloufa-Maafa and Leon Karpa and Olivier Dulieu},
journal= {arXiv preprint arXiv:2211.08950},
year = {2025}
}