Spin waves and Collisional Frequency Shifts of a Trapped-Atom Clock
Atomic Physics
2012-07-19 v4 Quantum Physics
Abstract
We excite spin-waves with spatially inhomogeneous pulses and study the resulting frequency shifts of a chip-scale atomic clock of trapped Rb. The density-dependent frequency shifts of the hyperfine transition simulate the s-wave collisional frequency shifts of fermions, including those of optical lattice clocks. As the spin polarizations oscillate in the trap, the frequency shift reverses and it depends on the area of the second Ramsey pulse, exhibiting a predicted beyond mean-field frequency shift. Numerical and analytic models illustrate the observed behaviors.
Cite
@article{arxiv.1204.1150,
title = {Spin waves and Collisional Frequency Shifts of a Trapped-Atom Clock},
author = {Wilfried Maineult and Christian Deutsch and Kurt Gibble and Jakob Reichel and Peter Rosenbusch},
journal= {arXiv preprint arXiv:1204.1150},
year = {2012}
}
Comments
Will appear soon in Physical Review Letters - Typos corrected