Information transmission and control in a chaotically kicked spin chain
  We study spin chains submitted to disturbed kick trains described by classical dynamical processes. The spin chains are coupled by Heisenberg and Ising-Z models. We consider chaotic processes by using the kick irregularity in the multipartite system (the spin chain). We show that the both couplings transmit differently the chaos disorder along the spin chain but conserve the horizon of coherence (when the disorder into the kick bath is transmitted to the spin chain). An example of information transmission between the spins of the chain coupled by a Heisenberg interaction shows the interest of the horizon of coherence. The use of some chosen stationary kicks disturbed by a chaotic environment allows to modify the information transmission between the spins and to perform a free control during the horizon of coherence. 
Lucile Aubourg and David Viennot
quant-ph