Atomic Clock Measurements of Quantum Scattering Phase Shifts Spanning Feshbach Resonances at Ultralow Fields

Aaron Bennett, Kurt Gibble, Servaas Kokkelmans, Jeremy M. Hutson

Research output: Contribution to journalArticle

3 Scopus citations

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 (US)
Article number113401
JournalPhysical Review Letters
Volume119
Issue number11
DOIs
StatePublished - Sep 15 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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