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Article Dans Une Revue Physical Review Letters Année : 2007

Roughness suppression via rapid current modulation on an atom chip

Résumé

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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Dates et versions

hal-00127098 , version 1 (29-01-2007)
hal-00127098 , version 2 (20-06-2007)

Identifiants

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Jean-Baptiste Trebbia, Carlos L. Garrido Alzar, Ronald Cornelussen, Christoph I Westbrook, Isabelle Bouchoule. Roughness suppression via rapid current modulation on an atom chip. Physical Review Letters, 2007, 98 (263201), pp.4. ⟨10.1103/PhysRevLett.98.263201⟩. ⟨hal-00127098v2⟩
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