Periodic excitations of bilinear quantum systems
Résumé
An usual way to transfer the population of a quantum system from an eigenspace of the free Hamiltonian to another is to use a periodic control law with angular frequency equal to the difference of the eigenvalues. This paper gives a theoretical explanation of the effectiveness of this widely used method. We introduce a notion of efficiency and demonstrate its interest for the design of control laws on the example of the rotation of a planar molecule.
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