Coherent delocalization of atomic wave packets in driven lattice potentials
Authors: Ivanov V. V., Alberti A., Schioppo M., Ferrari G., Artoni M., Chiofalo M.L., Tino G.M.
Autors Affiliation: Dipartimento di Fisica and LENS-Universita` di Firenze, CNR-INFM, INFN-Sezione di Firenze, via Sansone 1, 50019 Sesto Fiorentino, Italy; Department of Chemistry and Physics of Materials-University of Brescia, and LENS, Italy; INFN and Department of Mathematics, Faculty of Pharmacy, University of Pisa, Pisa, Italy
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.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 100 (4) Pages from: 043602 to: 043602
KeyWords: transport phenomena in lattices; optical lattices; matter wavesDOI: 10.1103/PhysRevLett.100.043602Citations: 85data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-12-04References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here