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

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

Research output: Contribution to journalArticleAcademicpeer-review

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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.
Original languageEnglish
Article number113401
Pages (from-to)113401
Number of pages5
JournalPhysical Review Letters
Volume119
Issue number11
DOIs
Publication statusPublished - 1 Sep 2017

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