The role of entanglement in dynamical evolution
  Entanglement or entanglement generating interactions permit to achieve the maximum allowed speed in the dynamical evolution of a composite system, when the energy resources are distributed among subsystems. The cases of pre-existing entanglement and of entanglement-building interactions are separately addressed. The role of classical correlations is also discussed. 
Vittorio Giovannetti, Seth Lloyd, and Lorenzo Maccone