Controllability of the discrete-spectrum Schrodinger equation driven by an external field

Details Controllability of the discrete-spectrum Schrodinger equation driven by an external field Controllability of the discrete-spectrum Schrodinger equation driven by an external field

2008-01-31

arxiv.org/abs/0801.4893v3

Annales de l'Institut Henri Poincar\'e Analyse non lin\'eaire (2009) vol. 26, pp. 329-349

Mathematics

Optimization and Control

Scientific paper

We prove approximate controllability of the bilinear Schr\"odinger equation in the case in which the uncontrolled Hamiltonian has discrete non-resonant spectrum. The results that are obtained apply both to bounded or unbounded domains and to the case in which the control potential is bounded or unbounded. The method relies on finite-dimensional techniques applied to the Galerkin approximations and permits, in addition, to get some controllability properties for the density matrix. Two examples are presented: the harmonic oscillator and the 3D well of potential, both controlled by suitable potentials.

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