Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 429–433 |
| Seitenumfang | 5 |
| Fachzeitschrift | Nature |
| Jahrgang | 600 |
| Ausgabenummer | 7889 |
| Frühes Online-Datum | 15 Dez. 2021 |
| Publikationsstatus | Veröffentlicht - 16 Dez. 2021 |
Abstract
The control of physical systems and their dynamics on the level of individual quanta underpins both fundamental science and quantum technologies. Trapped atomic and molecular systems, neutral 1 and charged 2, are at the forefront of quantum science. Their extraordinary level of control is evidenced by numerous applications in quantum information processing 3,4 and quantum metrology 5,6. Studies of the long-range interactions between these systems when combined in a hybrid atom–ion trap 7,8 have led to landmark results 9–19. However, reaching the ultracold regime—where quantum mechanics dominates the interaction, for example, giving access to controllable scattering resonances 20,21—has so far been elusive. Here we demonstrate Feshbach resonances between ions and atoms, using magnetically tunable interactions between 138Ba + ions and 6Li atoms. We tune the experimental parameters to probe different interaction processes—first, enhancing three-body reactions 22,23 and the related losses to identify the resonances and then making two-body interactions dominant to investigate the ion’s sympathetic cooling 19 in the ultracold atomic bath. Our results provide deeper insights into atom–ion interactions, giving access to complex many-body systems 24–27 and applications in experimental quantum simulation 28–30.
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in: Nature, Jahrgang 600, Nr. 7889, 16.12.2021, S. 429–433.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Observation of Feshbach resonances between a single ion and ultracold atoms
AU - Weckesser, Pascal
AU - Thielemann, Fabian
AU - Wiater, Dariusz
AU - Wojciechowska, Agata
AU - Karpa, Leon
AU - Jachymski, Krzysztof
AU - Tomza, Michal
AU - Walker, Thomas
AU - Schaetz, Tobias
N1 - Funding Information: Acknowledgements This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant number 648330) and was supported by the Georg H. Endress foundation. P.W., F.T. and T.S. acknowledge support from the DFG within the GRK 2079/1 programme. P.W. gratefully acknowledges financial support from the Studienstiftung des deutschen Volkes. L.K. is grateful for financial support from Marie Curie Actions. D.W., A.W. and M.T. acknowledge the financial support from the National Science Centre Poland (grant numbers 2016/23/B/ST4/03231 and 2020/36/T/ST2/00591) and Foundation for Polish Science within the First Team programme co-financed by the European Union under the European Regional Development Fund. K.J. acknowledges support from the Polish National Agency for Academic Exchange (NAWA) via the Polish Returns 2019 programme. The computational part was partially supported by the PL-Grid Infrastructure. We thank O. Dulieu for discussions. We thank M. Debatin for building the experimental apparatus.
PY - 2021/12/16
Y1 - 2021/12/16
N2 - The control of physical systems and their dynamics on the level of individual quanta underpins both fundamental science and quantum technologies. Trapped atomic and molecular systems, neutral 1 and charged 2, are at the forefront of quantum science. Their extraordinary level of control is evidenced by numerous applications in quantum information processing 3,4 and quantum metrology 5,6. Studies of the long-range interactions between these systems when combined in a hybrid atom–ion trap 7,8 have led to landmark results 9–19. However, reaching the ultracold regime—where quantum mechanics dominates the interaction, for example, giving access to controllable scattering resonances 20,21—has so far been elusive. Here we demonstrate Feshbach resonances between ions and atoms, using magnetically tunable interactions between 138Ba + ions and 6Li atoms. We tune the experimental parameters to probe different interaction processes—first, enhancing three-body reactions 22,23 and the related losses to identify the resonances and then making two-body interactions dominant to investigate the ion’s sympathetic cooling 19 in the ultracold atomic bath. Our results provide deeper insights into atom–ion interactions, giving access to complex many-body systems 24–27 and applications in experimental quantum simulation 28–30.
AB - The control of physical systems and their dynamics on the level of individual quanta underpins both fundamental science and quantum technologies. Trapped atomic and molecular systems, neutral 1 and charged 2, are at the forefront of quantum science. Their extraordinary level of control is evidenced by numerous applications in quantum information processing 3,4 and quantum metrology 5,6. Studies of the long-range interactions between these systems when combined in a hybrid atom–ion trap 7,8 have led to landmark results 9–19. However, reaching the ultracold regime—where quantum mechanics dominates the interaction, for example, giving access to controllable scattering resonances 20,21—has so far been elusive. Here we demonstrate Feshbach resonances between ions and atoms, using magnetically tunable interactions between 138Ba + ions and 6Li atoms. We tune the experimental parameters to probe different interaction processes—first, enhancing three-body reactions 22,23 and the related losses to identify the resonances and then making two-body interactions dominant to investigate the ion’s sympathetic cooling 19 in the ultracold atomic bath. Our results provide deeper insights into atom–ion interactions, giving access to complex many-body systems 24–27 and applications in experimental quantum simulation 28–30.
UR - http://www.scopus.com/inward/record.url?scp=85121334032&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2105.09382
DO - 10.48550/arXiv.2105.09382
M3 - Article
VL - 600
SP - 429
EP - 433
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7889
ER -