Fast optical transport of ultracold molecules over long distances
Name
Bao_2022_New_J._Phys._24_093028.pdf
Description
Published version
Size
1.95 MB
Format
Adobe PDF
Checksum (MD5)
1f943b9378deaec1364ae74746cfd3d8
Author(s)
Bao, Yicheng
Yu, Scarlett S
Anderegg, Loïc
Burchesky, Sean
Gonzalez-Acevedo, Derick
Chae, Eunmi
Ketterle, Wolfgang
Ni, Kang-Kuen
Doyle, John M
Date Issued
September 20, 2022
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Yicheng Bao et al 2022 New J. Phys. 24 093028
Version
Final published version
Abstract
Optically trapped laser-cooled polar molecules hold promise for new science and technology in quantum information and quantum simulation. Large numerical aperture optical access and long trap lifetimes are needed for many studies, but these requirements are challenging to achieve in a magneto-optical trap (MOT) vacuum chamber that is connected to a cryogenic buffer gas beam source, as is the case for all molecule laser cooling experiments so far. Long distance transport of molecules greatly eases fulfilling these requirements as molecules are placed into a region separate from the MOT chamber. We realize a fast transport method for ultracold molecules based on an electronically focus-tunable lens combined with an optical lattice. The high transport speed is achieved by the 1D red-detuned optical lattice, which is generated by interference of a focus-tunable laser beam and a focus-fixed laser beam. Efficiency of 48(8)% is realized in the transport of ultracold calcium monofluoride (CaF) molecules over 46 cm distance in 50 ms, with a moderate heating from 32(2) μK to 53(4) μK. Positional stability of the molecular cloud allows for stable loading of an optical tweezer array with single molecules.
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DOI of Published Version
https://doi.org/10.1088/1367-2630/ac900f
