Chaotic ratchet dynamics with cold atoms in a pair of pulsed optical lattices

Year: 2006

Authors: Carlo G.C., Benenti G., Casati G., Wimberger S., Morsch O., Mannella R., Arimondo E.

Autors Affiliation: Center for Nonlinear and Complex Systems, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy;
Departamento de Física, Comisión Nacional de Energía Atómica, Avenida del Libertador 8250, 1429 Buenos Aires, Argentina;
Istituto Nazionale di Fisica Nucleare, Sezione di Milano and CNISM, and CNR-INFM, Via Celoria 16, 20133 Milano, Italy;
Department of Physics, National University of Singapore, Singapore 117542, Republic of Singapore;
CNR-INFM and Dipartimento di Fisica “Enrico Fermi,” Università degli Studi di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy

Abstract: We present a very simple model for realizing directed transport with cold atoms in a pair of periodically flashed optical lattices. The origin of this ratchet effect is explained and its robustness demonstrated under imperfections typical of cold atom experiments. We conclude that our model offers a clear-cut way to implement directed transport in an atom optical experiment.


Volume: 74 (3)      Pages from: 033617-1  to: 033617-7

KeyWords: Cold atoms; Ratchets; Optical lattices
DOI: 10.1103/PhysRevA.74.033617

Citations: 32
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