Roughness suppression via rapid current modulation on an atom chip

Details Roughness suppression via rapid current modulation on an atom chip Roughness suppression via rapid current modulation on an atom chip

2007-01-29

arxiv.org/abs/quant-ph/0701207v2

Physical Review Letters (29/01/2007) 4

Physics

Quantum Physics

Scientific paper

We present a method to suppress the potential roughness of a wire-based, magnetic atom guide: modulating the wire current at a few tens of kHz, the potential roughness, which is proportional to the wire current, averages to zero. Using ultra-cold $^{87}{\rm Rb}$ clouds, we show experimentally that modulation reduces the roughness by at least of a factor five without measurable heating or atom loss. This roughness suppression results in a dramatic reduction of the damping of center of mass oscillations.

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