Eur. Phys. J. D 21, 229-232 (2002)
https://doi.org/10.1140/epjd/e2002-00189-8

Instability of the tunneling destruction effect in a quasi-periodically driven two-level system

Dipartimento di Matematica, Università di Modena e Reggio Emilia, Via Campi 213/B, 41100 Modena, Italy

Corresponding author: ^a Sacchetti@unimo.it

Received: 8 May 2002
Revised: 4 July 2002
Published online: 24 September 2002

Abstract

Here we consider the dynamics of a two-level system under an external time-dependent field. We show that in the case of a bichromatic field the dynamical localization effect is strongly sensitive with respect to the commensurability of the driving frequencies.