2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125324We propose a coarse-grained picture to analyze control problems for quantum chaos systems. Using optimal control theory, we first show that almost perfect control is achieved for random matrix systems and a quantum kicked rotor. Second, under the assumption that the controlled dynamics is well described by a Rabi-type oscillaion between unperturbed states, we derive an analytic expression for the optimal field. Finally we numerically confirm that the analytic field can steer an initial state to a target state in random matrix systems.REVTeX4 with graphicx package, 11 pages, 10 figures; replaced fig.1(a) and 2(a)Chaotic DynamicsChemical PhysicsQuantum Physicstext