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arXiv · 0801.1570

Coherent Delocalization of Atomic Wave Packets in Driven Lattice Potentials

V. V. Ivanov·A. Alberti·M. Schioppo·G. Ferrari·M. Artoni·M. L. Chiofalo·G. M. Tino
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Abstract

Atomic wave packets loaded into a phase-modulated vertical optical-lattice potential exhibit a coherent delocalization dynamics arising from intraband transitions among Wannier-Stark levels. Wannier-Stark intraband transitions are here observed by monitoring the in situ wave-packet extent. By varying the modulation frequency, we find resonances at integer multiples of the Bloch frequency. The resonances show a Fourier-limited width for interrogation times up to 2 s. This can also be used to determine the gravity acceleration with ppm resolution.

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V. V. Ivanov, A. Alberti, M. Schioppo, G. Ferrari, M. Artoni, M. L. Chiofalo, G. M. Tino. 2008-01-10. Coherent Delocalization of Atomic Wave Packets in Driven Lattice Potentials. https://doi.org/10.1103/physrevlett.100.043602

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