Laser chimeras as a paradigm for multistable patterns in complex systems.
Fiche publication
Date publication
juillet 2015
Journal
Nature communications
Auteurs
Membres identifiés du Cancéropôle Est :
Dr LARGER Laurent
Tous les auteurs :
Larger L, Penkovsky B, Maistrenko Y
Lien Pubmed
Résumé
A chimera state is a rich and fascinating class of self-organized solutions developed in high-dimensional networks. Necessary features of the network for the emergence of such complex but structured motions are non-local and symmetry breaking coupling. An accurate understanding of chimera states is expected to bring important insights on deterministic mechanism occurring in many structurally similar high-dimensional dynamics such as living systems, brain operation principles and even turbulence in hydrodynamics. Here we report on a powerful and highly controllable experiment based on an optoelectronic delayed feedback applied to a wavelength tuneable semiconductor laser, with which a wide variety of chimera patterns can be accurately investigated and interpreted. We uncover a cascade of higher-order chimeras as a pattern transition from N to N+1 clusters of chaoticity. Finally, we follow visually, as the gain increases, how chimera state is gradually destroyed on the way to apparent turbulence-like system behaviour.
Référence
Nat Commun. 2015 Jul;6:7752