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We derive in a straightforward way the exact controllability of the 1-DSchrodinger equation with a Dirichlet boundary control. We use the so-calledflatness approach, which consists in parameterizing the solution and thecontrol by the derivatives of a "flat output". This provides an explicitcontrol input achieving the exact controllability in the energy space. As anapplication, we derive an explicit pair of control inputs achieving the exactsteering to zero for a simply-supported beam.

Controllability of the 1D Schrodinger equation by the flatness approach