Bilinear control of high frequencies for a 1D Schrödinger equation

Abstract

In this article, we consider a 1D linear Schrodinger equation with potential V and bilinear control. Under appropriate assumptions on V , we prove the exact controllability of high frequencies, in H 3 , locally around any H 3-trajectory of the free system. In particular, any initial state in H 3 can be steered to a regular state, for instance a nite sum of eigen-functions of (−∆ + V). This fact, coupled with a previous result due to Nersesyan, proves the global exact controllability of the system in H 3 , with smooth controls, under appropriate assumptions.