Atomic clock measurements of quantum scattering phase shifts spanning Feshbach resonances at ultralow fields

Bennett, A.; Gibble, K.; Kokkelmans, S.; Hutson, J.M.

doi:10.1103/physrevlett.119.113401

Atomic clock measurements of quantum scattering phase shifts spanning Feshbach resonances at ultralow fields

Bennett, A.; Gibble, K.; Kokkelmans, S.; Hutson, J.M.

Authors

A. Bennett

K. Gibble

S. Kokkelmans

Professor Jeremy Hutson j.m.hutson@durham.ac.uk
Professor

Abstract

We use an atomic fountain clock to measure quantum scattering phase shifts precisely through a series of narrow, low-field Feshbach resonances at average collision energies below 1 μK. Our low spread in collision energy yields phase variations of order π=2 for target atoms in several F, mF states.We compare them to a theoretical model and establish the accuracy of the measurements and the theoretical uncertainties from the fitted potential.We find overall excellent agreement, with small statistically significant differences that remain unexplained.

Citation

Bennett, A., Gibble, K., Kokkelmans, S., & Hutson, J. (2017). Atomic clock measurements of quantum scattering phase shifts spanning Feshbach resonances at ultralow fields. Physical Review Letters, 119(11), Article 113401. https://doi.org/10.1103/physrevlett.119.113401

Journal Article Type	Article
Acceptance Date	Aug 22, 2017
Online Publication Date	Sep 15, 2017
Publication Date	Sep 15, 2017
Deposit Date	Sep 22, 2017
Publicly Available Date	Oct 6, 2017
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	119
Issue	11
Article Number	113401
DOI	https://doi.org/10.1103/physrevlett.119.113401
Related Public URLs	https://arxiv.org/abs/1708.03715

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Copyright Statement
Reprinted with permission from the American Physical Society: [Bennett, A., Gibble, K., Kokkelmans, S. & Hutson, J. M. (2017). Atomic clock measurements of quantum scattering phase shifts spanning Feshbach resonances at ultralow fields. Physical Review Letters 119(11): 113401 © 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.