Scientific Results

Quasi-periodic Wannier-Stark ladders from driven atomic Bloch oscillations

Year: 2014

Authors: Artoni M., La Rocca G.C., Ferrari G.

Autors Affiliation: Department of Engineering and Information Technology, Brescia University, Brescia, Italy; European Laboratory for Nonlinear Spectroscopy (LENS), Florence, Italy; Istituto Nazionale di Ottica (INO), I-50125 Florence, Italy; Scuola Normale Superiore and CNISM, Pisa, Italy; INO-CNR BEC Center and Dipartimento di Fisica, Trento University, I-38123 Povo, Italy

Abstract: Periodic Wannier-Stark ladder structures of the energy resonances associated with Bloch oscillations can be readily modified into quasi-periodic ones that exhibit peculiar self-similar effects. A compact theoretical description of the dynamics of driven Bloch oscillations is developed here within the quasi-momentum representation. We identify a rather viable scheme based on ultracold atomic wavepackets subject to gravity in a driven optical lattice potential where a self-similar scaling could be observed. Its feasibility in terms of realistic experimental parameters is also discussed.

Journal/Review: PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCE

Volume: 470 (2171)      Pages from: 20140  to: 20159

KeyWords: atomic Bloch oscillations; self-similar structures; ultracold atoms
DOI: 10.1098/rspa.2014.0421

Connecting to view paper tab on IsiWeb: Click here

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more