Long rotational coherence times of molecules in a magnetic trap
Caldwell, L.; Williams, H.J.; Fitch, N.J.; Aldegunde, J.; Hutson, J.M.; Sauer, B.E.; Tarbutt, M.R.
Professor Jeremy Hutson firstname.lastname@example.org
Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotational transitions that are exceptionally insensitive to magnetic fields. We verify this experimentally for CaF where we find a transition with sensitivity below 5 Hz G−1 and use it to demonstrate a rotational coherence time of 6.4(8) ms in a magnetic trap. Simulations suggest it is feasible to extend this to more than 1 s using a smaller cloud in a biased magnetic trap.
Caldwell, L., Williams, H., Fitch, N., Aldegunde, J., Hutson, J., Sauer, B., & Tarbutt, M. (2020). Long rotational coherence times of molecules in a magnetic trap. Physical Review Letters, 124(6), Article 063001. https://doi.org/10.1103/physrevlett.124.063001
|Journal Article Type||Article|
|Acceptance Date||Dec 17, 2019|
|Online Publication Date||Feb 10, 2020|
|Publication Date||Feb 28, 2020|
|Deposit Date||Jan 23, 2020|
|Publicly Available Date||Feb 13, 2020|
|Journal||Physical Review Letters|
|Publisher||American Physical Society|
|Peer Reviewed||Peer Reviewed|
|Related Public URLs||https://arxiv.org/abs/1908.11839|
Published Journal Article
Publisher Licence URL
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
You might also like
Formation of Ultracold Molecules by Merging Optical Tweezers
Pinpointing Feshbach resonances and testing Efimov universalities in 39K
Feshbach Spectroscopy of Cs Atom Pairs in Optical Tweezers