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 The American Physical Society.

Coherent delocalization of atomic wave packets in driven lattice potentials / Ivanov, V. V.; Alberti, A.; Schioppo, M.; Ferrari, G.; Artoni, M.; Chiofalo, M. L.; Tino, G. M.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:4(2008). [10.1103/PhysRevLett.100.043602]

Coherent delocalization of atomic wave packets in driven lattice potentials

Ferrari G.;
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 The American Physical Society.
2008
4
Ivanov, V. V.; Alberti, A.; Schioppo, M.; Ferrari, G.; Artoni, M.; Chiofalo, M. L.; Tino, G. M.
Coherent delocalization of atomic wave packets in driven lattice potentials / Ivanov, V. V.; Alberti, A.; Schioppo, M.; Ferrari, G.; Artoni, M.; Chiofalo, M. L.; Tino, G. M.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:4(2008). [10.1103/PhysRevLett.100.043602]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/257247
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