期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.054103
关键词
-
资金
- NSF [PHY-0653494]
We experimentally investigate the sub-Fourier behavior of a delta-kicked-rotor resonance by performing a measurement of the fidelity or overlap of a Bose-Einstein condensate exposed to a periodically pulsed standing wave. The temporal width of the fidelity resonance peak centered at the Talbot time and zero initial momentum exhibits an inverse cube pulse number (1/N(3))-dependent scaling compared to a 1/N(2) dependence for the mean energy width at the same resonance. A theoretical analysis shows that for an accelerating potential the width of the resonance in acceleration space depends on 1/N(3), a property which we also verify experimentally. Such a sub-Fourier effect could be useful for high precision gravity measurements.
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