Titre :

Synchronization in non dissipative optical lattices

Auteur(s) :

Hennequin, Daniel [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Verkerk, Philippe [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la revue :

The European Physical Journal D : Atomic, molecular, optical and plasma physics

Pagination :

95-104

Éditeur :

EDP Sciences

Date de publication :

2010-01

ISSN :

1434-6060

Mot(s)-clé(s) en anglais :

cold atoms
optical lattices
chaos

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Physique Atomique [physics.atom-ph]
Science non linéaire [physics]/Dynamique Chaotique [nlin.CD]

Résumé en anglais : [en]

The dynamics of cold atoms in conservative optical lattices obviously depends on the geometry of the lattice. But very similar lattices may lead to deeply different dynamics. For example, in a 2D optical lattice with a ...
Lire la suite >The dynamics of cold atoms in conservative optical lattices obviously depends on the geometry of the lattice. But very similar lattices may lead to deeply different dynamics. For example, in a 2D optical lattice with a square mesh, the sign of the detuning plays a crucial role: in the blue detuned case, trajectories of an atom inside a well are chaotic for high enough energies. On the contrary, in the red detuned case, chaos is completely inhibited inside the wells. Here, we study in details the dynamical regimes of atoms inside a well of a red detuned lattice, with the aim to understand the dynamical mechanisms leading to the disappearance of chaos. We show that the motions in the two directions of space are frequency locked in most of the phase space, for most of the parameters of the lattice and atoms. This synchronization, not as strict as that of a dissipative system, is nevertheless a mechanism powerful enough to explain that chaos cannot appear in red detuned lattices.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL