Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 042704 |
| Fachzeitschrift | Physical Review A |
| Jahrgang | 101 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - 20 Apr. 2020 |
Abstract
We create weakly bound bosonic 23Na39K molecules in a mixture of ultracold Na23 and K39. The creation is done in the vicinity of a so far undetected Feshbach resonance at about 196 G which we identify in this work by atom-loss spectroscopy. We investigate the involved molecular state by performing destructive radio-frequency binding-energy measurements. For the constructive molecule creation we use radio-frequency pulses with which we assemble up to 6000 molecules. We analyze the molecule creation efficiency as a function of the radio-frequency pulse duration and the atom number ratio between Na23 and K39. We find an overall optimal efficiency of 6% referring to the K39 atom number. The measured lifetime of the molecules in the bath of trapped atoms is about 0.3 ms.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
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in: Physical Review A, Jahrgang 101, Nr. 4, 042704, 20.04.2020.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung
}
TY - JOUR
T1 - Formation of ultracold weakly bound dimers of bosonic 23Na39K
AU - Voges, Kai Konrad
AU - Gersema, Philipp
AU - Hartmann, Torsten
AU - Schulze, Torben Alexander
AU - Zenesini, Alessandro
AU - Ospelkaus-Schwarzer, Silke
N1 - Funding information: We thank E. Tiemann for enlightening discussions and theory support. We gratefully acknowledge financial support from the European Research Council through ERC Starting Grant POLAR and from the Deutsche Forschungsgemeinschaft (DFG) through CRC 1227 (DQ-mat), project A03, and FOR 2247, project E5. K.K.V. and P.G. thank the DFG for financial support through Research Training Group 1991.
PY - 2020/4/20
Y1 - 2020/4/20
N2 - We create weakly bound bosonic 23Na39K molecules in a mixture of ultracold Na23 and K39. The creation is done in the vicinity of a so far undetected Feshbach resonance at about 196 G which we identify in this work by atom-loss spectroscopy. We investigate the involved molecular state by performing destructive radio-frequency binding-energy measurements. For the constructive molecule creation we use radio-frequency pulses with which we assemble up to 6000 molecules. We analyze the molecule creation efficiency as a function of the radio-frequency pulse duration and the atom number ratio between Na23 and K39. We find an overall optimal efficiency of 6% referring to the K39 atom number. The measured lifetime of the molecules in the bath of trapped atoms is about 0.3 ms.
AB - We create weakly bound bosonic 23Na39K molecules in a mixture of ultracold Na23 and K39. The creation is done in the vicinity of a so far undetected Feshbach resonance at about 196 G which we identify in this work by atom-loss spectroscopy. We investigate the involved molecular state by performing destructive radio-frequency binding-energy measurements. For the constructive molecule creation we use radio-frequency pulses with which we assemble up to 6000 molecules. We analyze the molecule creation efficiency as a function of the radio-frequency pulse duration and the atom number ratio between Na23 and K39. We find an overall optimal efficiency of 6% referring to the K39 atom number. The measured lifetime of the molecules in the bath of trapped atoms is about 0.3 ms.
UR - http://www.scopus.com/inward/record.url?scp=85085172992&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.101.042704
DO - 10.1103/PhysRevA.101.042704
M3 - Article
VL - 101
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 4
M1 - 042704
ER -