Resolved atomic interaction sidebands in an optical clock transition

Details Resolved atomic interaction sidebands in an optical clock transition Resolved atomic interaction sidebands in an optical clock transition

2011-02-04

arxiv.org/abs/1102.1016v2

Phys. Rev. Lett. 106, 250801 (2011)

Physics

Quantum Physics

Scientific paper

We report the observation of resolved atomic interaction sidebands (ISB) in the ${}^{87}$Sr optical clock transition when atoms at microkelvin temperatures are confined in a two-dimensional (2D) optical lattice. The ISB are a manifestation of the strong interactions that occur between atoms confined in a quasi-one-dimensional geometry and disappear when the confinement is relaxed along one dimension. The emergence of ISB is linked to the recently observed suppression of collisional frequency shifts in [1]. At the current temperatures, the ISB can be resolved but are broad. At lower temperatures, ISB are predicted to be substantially narrower and usable as powerful spectroscopic tools in strongly interacting alkaline-earth gases.

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