title: Coherence dynamics of kicked Bose-Hubbard dimers: interferometric signatures of chaos.
abstract: We study the coherence dynamics of a kicked two-mode Bose-Hubbard model starting with an arbitrary coherent spin preparation. For preparations in the chaotic regions of phase space we find a generic behavior with Floquet participation numbers that scale as the entire N-particle Hilbert space, leading to a rapid loss of single-particle coherence. However, the chaotic behavior is not uniform throughout the chaotic sea and unique statistics is found for preparations at the vicinity of hyperbolic points that are embedded in it. This is contrasted with the low log(N) participation that is responsible for the revivals in the vicinity of isolated hyperbolic instabilities.
authors: Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
authors: Christine
authors: C
authors: Khripkov
authors: Doron
authors: D
authors: Cohen
authors: Amichay
authors: A
authors: Vardi
mesh_terms: D003198:Computer Simulation; D007368:Interferometry / Q000379:methods*; D015233:Models, Statistical; D017711:Nonlinear Dynamics