Cooperation and competition between quantum effect and non-linear effect in strongly interacting electron systems provide a number of exotic superconductivity, magnetism, dielectrics and others, which have attracted much attention from fundamental and application points of view. It is expected that ultrashort optical pulse introduced in correlated electron systems generates a “hidden state” which does not realize in thermal equilibrium state. Instead of recent great developments of the ultrashort optical experimental technique, it is still tough work that all of many body effect, quantum effect, and nonequilibrium effect are included sufficiently in theoretical calculations. We reveal a novel hidden state induced by optical pulse through the large-scale computer simulations [1]. It is expected in usual sense that optical irradiation into a solid promotes electron motion, since the electric field accelerates electrons. However, we find that, in a correlated electron model on a ladder lattice, the optical irradiation suppresses the electron motion. This unexpected phenomenon was confirmed in the recent optical pump-probe experiments. The present work may provide some information for mechanism of the superconductivity which emerges in the ladder cuprates.