Details
| Original language | English |
|---|---|
| Article number | 14854 |
| Pages (from-to) | 228-232 |
| Number of pages | 5 |
| Journal | Nature physics |
| Volume | 21 |
| Issue number | 2 |
| Early online date | 9 Jan 2025 |
| Publication status | Published - Feb 2025 |
Abstract
Gaining control over chemical reactions at the quantum level is a central goal of cold and ultracold chemistry. Here we demonstrate a method for coherently steering the reaction flux across different product spin channels for a three-body recombination process in a cloud of trapped cold atoms. We use a magnetically tunable Feshbach resonance to admix, in a controlled way, a specific spin state to the reacting collision complex. This allows us to control the reaction flux into the admixed spin channel, which can be used to alter the reaction products. We also investigate the influence of an Efimov resonance on the reaction dynamics, observing a global enhancement of three-body recombination without favouring particular reaction channels. Our control scheme can be extended to other reaction processes and could be combined with other methods, such as quantum interference of reaction paths, to achieve further tuning capabilities of few-body reactions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Nature physics, Vol. 21, No. 2, 14854, 02.2025, p. 228-232.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Controlling few-body reaction pathways using a Feshbach resonance
AU - Haze, Shinsuke
AU - Li, Jing Lun
AU - Dorer, Dominik
AU - D’Incao, José P.
AU - Julienne, Paul S.
AU - Tiemann, Eberhard
AU - Deiß, Markus
AU - Hecker Denschlag, Johannes
N1 - Publisher Copyright: © The Author(s) 2025.
PY - 2025/2
Y1 - 2025/2
N2 - Gaining control over chemical reactions at the quantum level is a central goal of cold and ultracold chemistry. Here we demonstrate a method for coherently steering the reaction flux across different product spin channels for a three-body recombination process in a cloud of trapped cold atoms. We use a magnetically tunable Feshbach resonance to admix, in a controlled way, a specific spin state to the reacting collision complex. This allows us to control the reaction flux into the admixed spin channel, which can be used to alter the reaction products. We also investigate the influence of an Efimov resonance on the reaction dynamics, observing a global enhancement of three-body recombination without favouring particular reaction channels. Our control scheme can be extended to other reaction processes and could be combined with other methods, such as quantum interference of reaction paths, to achieve further tuning capabilities of few-body reactions.
AB - Gaining control over chemical reactions at the quantum level is a central goal of cold and ultracold chemistry. Here we demonstrate a method for coherently steering the reaction flux across different product spin channels for a three-body recombination process in a cloud of trapped cold atoms. We use a magnetically tunable Feshbach resonance to admix, in a controlled way, a specific spin state to the reacting collision complex. This allows us to control the reaction flux into the admixed spin channel, which can be used to alter the reaction products. We also investigate the influence of an Efimov resonance on the reaction dynamics, observing a global enhancement of three-body recombination without favouring particular reaction channels. Our control scheme can be extended to other reaction processes and could be combined with other methods, such as quantum interference of reaction paths, to achieve further tuning capabilities of few-body reactions.
UR - http://www.scopus.com/inward/record.url?scp=85214916646&partnerID=8YFLogxK
U2 - 10.1038/s41567-024-02726-3
DO - 10.1038/s41567-024-02726-3
M3 - Article
AN - SCOPUS:85214916646
VL - 21
SP - 228
EP - 232
JO - Nature physics
JF - Nature physics
SN - 1745-2473
IS - 2
M1 - 14854
ER -