Local gravity measurement with the combination of atom interferometry and Bloch oscillations

Details Local gravity measurement with the combination of atom interferometry and Bloch oscillations Local gravity measurement with the combination of atom interferometry and Bloch oscillations

2011-09-16

arxiv.org/abs/1109.3605v1

Physics

Atomic Physics

Scientific paper

We present a local measurement of gravity combining Bloch oscillations and atom interferometry. With a falling distance of 0.8 mm, we achieve a sensitivity of 2x10-7 g with an integration time of 300 s. No bias associated with the Bloch oscillations has been measured. A contrast decay with Bloch oscillations has been observed and attributed to the spatial quality of the laser beams. A simple experimental configuration has been adopted where a single retro-reflected laser beam is performing atoms launch, stimulated Raman transitions and Bloch oscillations. The combination of Bloch oscillations and atom interferometry can thus be realized with an apparatus no more complex than a standard atomic gravimeter.

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