Cold Atom Space Clock with Counter-Propagating Atoms

Details Cold Atom Space Clock with Counter-Propagating Atoms Cold Atom Space Clock with Counter-Propagating Atoms

2009-02-18

arxiv.org/abs/0902.3066v1

Physics

Atomic Physics

8 pages, 1 figure

Scientific paper

We discuss the feasibility to realize a space cold atom clock with counter-propagating cold atoms in microgravity. The design of the space clock is based on atomic beam clock with a Ramsey cavity, except a magneto-optical trap (MOT) is placed at each side. Cold atoms are launched from MOTs at both side of the clock simultaneously and move at counter-direction towards each other. The velocity of launched atoms is precisely controlled to the Ramsauer-Townsend resonance so that no additional collision frequency shift is taken place. Such a configuration can efficiently cancel the frequency shift led from cavity phase shift and increase the signal to noise.

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