This work took place in PhAs team of Institut UTINAM UMR 6213 of Université de Franche-Comté under the supervision of José Lages and Eugène de Prunelé. This work was in collaboration with Dima Shepelyansky of Laboratoire de Physique Théorique UMR 5152, LPT of Toulouse.
French version of this page here.