Hyperfine dependent atom-molecule loss analyzed by the analytic solution of few-body loss equations

Year: 2022

Authors: Voges K.K., Gersema P., Hartmann T., Ospelkaus S., Zenesini A.

Autors Affiliation: Leibniz Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany; Univ Trento, Dipartimento Fis, INO CNR BEC Ctr, I-38123 Povo, Italy; TIFPA INFN, I-38123 Povo, Italy.

Abstract: We prepare mixtures of ultracold K39 atoms in various hyperfine spin states with Na23K39 molecules in an optical dipole trap at a fixed magnetic field and study inelastic two-body atom-molecule collisions. We observe atom-molecule losses that are hyperfine dependent with a two-body loss rate far below the universal limit. We analyze the two-body loss dynamics based on the derivation of general and easy applicable analytic solutions for the differential equations describing the loss of an arbitrary number ? of particles in a single collisional event.

Journal/Review: PHYSICAL REVIEW RESEARCH

Volume: 4 (2)      Pages from: 023184-1  to: 023184-6

More Information: We thank Goulven Qu?m?ner for enlightening comments and Jeremy Hutson and Matthew Frye for insightful concep-tions. We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through CRC 1227 DQ-mat Project No. A03, FOR2247 Project E5 and under Germany?s Excellence Strat-egy-EXC-2123 Quantum Frontiers 390837967. P.G. thanks the Deutsche Forschungsgemeinschaft for financial support through Research Training Group 1991. A.Z. thanks Provincia Autonoma di Trento for financial support.
KeyWords: Molecular physics, Ultracold molecules, Hyperfine states
DOI: 10.1103/PhysRevResearch.4.023184

Citations: 4
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