Eur. Phys. J. D 64, 131-136 (2011)
https://doi.org/10.1140/epjd/e2011-20219-8

Regular Article

Driving the resonant quantum kicked rotor via extended initial conditions

Instituto de Física, Facultad de Ingeniería, Universidad de la República, C.C. 30, C.P. 11000, Montevideo, Uruguay

^a e-mail alejo@fing.edu.uy

Received: 14 April 2011
Received in final form: 24 May 2011
Published online: 27 July 2011

Abstract

We study the resonances of the quantum kicked rotor subjected to an extended initial distribution. For the primary resonances we obtain the dispersion relation for the map of this system. We find an analytical dependence of the statistical moments on the shape of the initial distribution. For the secondary resonances we obtain numerically a similar dependence. This allows us to devise an extended initial condition which produces an average angular momentum pointing in a preset direction which increases with time with a preset ratio.