Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session V01: Poster Session III (4:00-6:00pm, EDT)
4:00 PM,
Thursday, June 2, 2022
Room: Grand Ballroom C
Abstract: V01.00036 : Radio-frequency magneto-optical trap of 87Rb*
Presenter:
Qian Wang
(University of Chicago)
Authors:
Qian Wang
(University of Chicago)
Yuqi Zhu
(Yale University)
Thomas K Langin
(University of Chicago)
Varun Jorapur
(Yale University)
David DeMille
(University of Chicago)
Molecular laser cooling schemes operate on "type-II" transitions with polarization dark states. Radio-frequency magneto-optical traps (RF MOTs), in which the magnetic field gradient and laser polarization are flipped rapidly and synchronously, are usually used for such transitions. Here we demonstrate an RF MOT of 87Rb, which paves the way for co-trapping with directly-cooled molecules. We operate the Rb RF MOT on the D2 line, and load it from a 2D MOT. We fully characterize the RF MOT, and also compare it to a standard DC MOT loaded from the same source. We find that the RF MOT captures similar numbers of atoms but at 2.3 times lower density. We also applied Λ-enhanced gray molasses after the RF MOT, to achieve temperatures of ≈10 μK with only 35% atom loss. We also detail our plan to co-trap 88Sr19F and 87Rb to study collisions and sympathetic cooling.
*The authors acknowledge support from AFOSR MURI.
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