Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | L042036 |
| Fachzeitschrift | Physical Review Research |
| Jahrgang | 4 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - Okt. 2022 |
Abstract
Current dual-frequency magneto-optical traps (MOTs) for ultracold molecules are plagued by sub-Doppler heating effects, making them vastly inferior to standard atomic MOTs. Here we demonstrate theoretically that the sub-Doppler effects in such a MOT can be engineered to provide cooling instead of heating. We give an intuitive picture how to achieve such cooling and show the cooling and trapping force results of the 16-level optical Bloch equations for the case of CaF molecules. From three-dimensional Monte Carlo simulations we estimate the temperature and density of our MOT to be 40μK and 4×108cm-3, respectively, for a molecule number of 1×105. We also extend our idea to the case of atomic MOTs and show that it can be used to produce sub-Doppler forces in these systems that are much more robust against magnetic fields.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical Review Research, Jahrgang 4, Nr. 4, L042036, 10.2022.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Engineering the sub-Doppler force in magneto-optical traps
AU - Xu, S.
AU - Kaebert, P.
AU - Stepanova, M.
AU - Poll, T.
AU - Siercke, M.
AU - Ospelkaus, S.
N1 - Funding Information: We thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for support under Germany's Excellence Strategy - EXC-2123 QuantumFrontiers - 390837967.
PY - 2022/10
Y1 - 2022/10
N2 - Current dual-frequency magneto-optical traps (MOTs) for ultracold molecules are plagued by sub-Doppler heating effects, making them vastly inferior to standard atomic MOTs. Here we demonstrate theoretically that the sub-Doppler effects in such a MOT can be engineered to provide cooling instead of heating. We give an intuitive picture how to achieve such cooling and show the cooling and trapping force results of the 16-level optical Bloch equations for the case of CaF molecules. From three-dimensional Monte Carlo simulations we estimate the temperature and density of our MOT to be 40μK and 4×108cm-3, respectively, for a molecule number of 1×105. We also extend our idea to the case of atomic MOTs and show that it can be used to produce sub-Doppler forces in these systems that are much more robust against magnetic fields.
AB - Current dual-frequency magneto-optical traps (MOTs) for ultracold molecules are plagued by sub-Doppler heating effects, making them vastly inferior to standard atomic MOTs. Here we demonstrate theoretically that the sub-Doppler effects in such a MOT can be engineered to provide cooling instead of heating. We give an intuitive picture how to achieve such cooling and show the cooling and trapping force results of the 16-level optical Bloch equations for the case of CaF molecules. From three-dimensional Monte Carlo simulations we estimate the temperature and density of our MOT to be 40μK and 4×108cm-3, respectively, for a molecule number of 1×105. We also extend our idea to the case of atomic MOTs and show that it can be used to produce sub-Doppler forces in these systems that are much more robust against magnetic fields.
UR - http://www.scopus.com/inward/record.url?scp=85144607718&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.4.L042036
DO - 10.1103/PhysRevResearch.4.L042036
M3 - Article
AN - SCOPUS:85144607718
VL - 4
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 4
M1 - L042036
ER -