Observation of magnetically tunable Feshbach resonances in ultracold 23 Na 40 K + 40 K collisions

作者：H. X. Yang, De-Chao Zhang, Lan Liu, Ya-Xiong Liu, Jue Nan, Bo Zhao, Jian-Wei Pan · 发表于：Science · 年份：2019 · DOI：10.1126/science.aau5322 · 被引用次数：165 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Quantum, superfluid, helium dynamics、Spectroscopy and Laser Applications

K) molecules in the rovibrational ground state. We prepare the atoms and molecules in various hyperfine levels of their ground states and observe the loss of molecules as a function of the magnetic field. The atom-molecule Feshbach resonances are identified by observing an enhancement of the loss. We have observed 11 resonances in the magnetic field range of 43 to 120 gauss. The observed atom-molecule Feshbach resonances at ultralow temperatures probe the three-body potential energy surface with exceptional resolution and will help to improve understanding of ultracold collisions.