title: Doubly excited ferromagnetic spin chain as a pair of coupled kicked rotors.
abstract: We show that the dynamics of a doubly excited Heisenberg spin chain, subject to short pulses from a parabolic magnetic field may be analyzed as a pair of quantum kicked rotors. By focusing on the two-magnon dynamics in the kicked XXZ model we investigate how the anisotropy parameter--which controls the strength of the magnon-magnon interaction--changes the nature of the coupling between the two "image" coupled kicked rotors. We investigate quantum state transfer possibilities and show that one may control whether the spin excitations are transmitted together, or separate from each other.
authors.affiliation: Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom.
authors.forename: T
authors.initials: T
authors.lastname: Boness
authors.forename: K
authors.initials: K
authors.lastname: Kudo
authors.forename: T S
authors.initials: TS
authors.lastname: Monteiro