Hyperfine Spectroscopy of Optically Trapped Atoms

Details Hyperfine Spectroscopy of Optically Trapped Atoms Hyperfine Spectroscopy of Optically Trapped Atoms

2004-09-28

arxiv.org/abs/physics/0409146v1

Physics

Atomic Physics

Review/Tutorial

Scientific paper

10.1088/1464-4266/7/8/R01

We perform spectroscopy on the hyperfine splitting of $^{85}$Rb atoms trapped in far-off-resonance optical traps. The existence of a spatially dependent shift in the energy levels is shown to induce an inherent dephasing effect, which causes a broadening of the spectroscopic line and hence an inhomogeneous loss of atomic coherence at a much faster rate than the homogeneous one caused by spontaneous photon scattering. We present here a number of approaches for reducing this inhomogeneous broadening, based on trap geometry, additional laser fields, and novel microwave pulse sequences. We then show how hyperfine spectroscopy can be used to study quantum dynamics of optically trapped atoms.

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