Two-photon optical shielding of collisions between ultracold polar molecules

authored by: Charbel Karam, Romain Vexiau, Nadia Bouloufa-Maafa, Olivier Dulieu, Maxence Lepers, Mara Meyer Zum Alten Borgloh, Silke Ospelkaus, Leon Karpa
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 [Xie, Phys. Rev. Lett. 125, 153202 (2020)0031-900710.1103/PhysRevLett.125.153202], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for Na23K39, should be applicable to a large class of polar diatomic molecules.
Organisation(s): Institute of Quantum Optics
CRC 1227 Designed Quantum States of Matter (DQ-mat)
External Organisation(s): Université Paris-Saclay
Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB)
Type: Article
Journal: Physical Review Research
Volume: 5
ISSN: 2643-1564
Publication date: 03.08.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Physics and Astronomy(all)
Electronic version(s): https://doi.org/10.1103/PhysRevResearch.5.033074 (Access: Open)

BibTeX

@article{ab3d5ecfef054bf1877b7219bfcf4ed8,
title = "Two-photon optical shielding of collisions between ultracold polar molecules",
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 [Xie, Phys. Rev. Lett. 125, 153202 (2020)0031-900710.1103/PhysRevLett.125.153202], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for Na23K39, should be applicable to a large class of polar diatomic molecules.",
author = "Charbel Karam and Romain Vexiau and Nadia Bouloufa-Maafa and Olivier Dulieu and Maxence Lepers and Borgloh, {Mara Meyer Zum Alten} and Silke Ospelkaus and Leon Karpa",
note = "Funding Information: C.K. acknowledges the support of the Quantum Institute of Universit{\'e} Paris-Saclay. M.M., S.O., and L.K. thank the DFG (German Research Foundation) for support through CRC 1227 DQ-mat and Germany's Excellence Strategy—EXC-2123 QuantumFrontiers—No. 390837967. This work is supported in part by the ERC Consolidator Grant 101045075- TRITRAMO, and by the joint ANR/DFG project OpEnMInt (ANR-22-CE92-0069-01). Stimulating discussions with Prof. Eberhard Tiemann (IQO, Leibniz University, Hannover) and with Dr Patrick Cheinet (LAC, CNRS, Universit{\'e} Paris-Saclay, France) are gratefully acknowledged.",
year = "2023",
month = aug,
day = "3",
doi = "10.1103/PhysRevResearch.5.033074",
language = "English",
volume = "5",
journal = "Physical Review Research",
issn = "2643-1564",
publisher = "American Physical Society",
number = "3",
}