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.

Coherent delocalization of atomic wave packets in driven lattice potentials

CHIOFALO, MARIA LUISA;
2008-01-01

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.
2008
Ivanov, Vv; Alberti, A; Schioppo, M; Ferrari, G; Artoni, M; Chiofalo, MARIA LUISA; Tino, Gm
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/119604
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