Roughness Suppression via Rapid Current Modulation on an Atom Chip
2007; American Physical Society; Volume: 98; Issue: 26 Linguagem: Inglês
10.1103/physrevlett.98.263201
ISSN1092-0145
AutoresJean-Baptiste Trebbia, Carlos L. Garrido Alzar, Richard Cornelussen, C. I. Westbrook, Isabelle Bouchoule,
Tópico(s)Quantum Information and Cryptography
ResumoWe present a method to suppress the roughness of the potential 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 ultracold $^{87}\mathrm{Rb}$ clouds, we show experimentally that modulation reduces the roughness by at least 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.
Referência(s)