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Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
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Radiofrequency-induced heating of an interacting Bose-Fermi mixture and towards a quantum gas microscope of NaK dipolar molecules

Poster 96
Presenter: Huan Q Bui (Massachusetts Institute of Technology)
Authors: Yiming Zhang (Massachusetts Institute of Technology), Jacob VanArsdale (Colorado State University), Alexander Chuang (Massachusetts Institute of Technology), Yiqi Ni (Massachusetts Institute of Technology), Arthur Christianen (ETH), Denise Ahmed-Braun (TUE), Carsten Robens (Massachusetts Institute of Technology MIT), Martin Zwierlein (Massachusetts Institute of Technology)
Collaboration: Huan Bui

Radiofrequency spectroscopy of an ultracold, strongly interacting mixture of 23Na and 40K atoms reveals a novel type of halo trimer which consists of two light bosons and one heavy fermion [1]. The trimers have a structure of a Feshbach dimer with a weakly-bound boson and are detected as an additional loss feature near the dimer resonance. In this work, we report on complimentary RF spectra in which the temperature of the mixture following the RF-induced loss process is measured. The spectra reveal striking heating effects at the dimer, trimer, and atomic resonances, which along with trap dynamics and saturation effects explain the discrepancies between observed loss spectra and theoretical lineshapes. With markedly higher SNR than its atom-loss counterpart due to insensitivity to atom number fluctuations, RF heating spectroscopy is an attractive tool for future precision spectroscopy experiments. Additionally, we report on our recent progress towards building a quantum gas microscope of dipolar ground state NaK molecules. 

[1]  A. Chuang, H. Bui, A. Christianen, Y. Zhang, Y. Ni, D. Ahmed-Braun, C. Robens, M. Zwierlein. arXiv:2411.04820. Submitted to PRX.



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Funding acknowledgement

NSF, AFOSR MURI on molecular ensembles, and the Vannevar Bush Faculty Fellowship

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