Spin Waves and Collisional Frequency Shifts of a Trapped-Atom Clock

Wilfried Maineult, Christian Deutsch, Kurt Gibble, Jakob Reichel, and Peter Rosenbusch
Phys. Rev. Lett. 109, 020407 – Published 13 July 2012

Abstract

We excite spin waves with spatially inhomogeneous Ramsey pulses and study the resulting frequency shifts of a chip-scale atomic clock of trapped Rb87. 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 these observed behaviors.

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  • Received 9 March 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.020407

© 2012 American Physical Society

Authors & Affiliations

Wilfried Maineult1, Christian Deutsch2, Kurt Gibble3, Jakob Reichel2, and Peter Rosenbusch1,*

  • 1LNE-SYRTE, Observatoire de Paris, CNRS, UPMC, 61 av de l’Observatoire, 75014 Paris, France
  • 2Laboratoire Kastler Brossel, ENS, UPMC, CNRS, 24 rue Lhomond, 75005 Paris, France
  • 3Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA

  • *Peter.Rosenbusch@obspm.fr

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Vol. 109, Iss. 2 — 13 July 2012

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