779 citations · 2k across the 73 of their papers we have counts for
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Time Minimal Trajectories for a Spin 1/2 Particle in a Magnetic Field
Ugo Boscain, Paolo Mason
In this paper we consider the minimum time population transfer problem for the -component of the spin of a (spin 1/2) particle driven by a magnetic field, controlled along the x…
Time Minimal Trajectories for two-level Quantum Systems with Drift
Ugo Boscain, Paolo Mason
On a two-level quantum system driven by an external field, we consider the population transfer problem from the first to the second level, minimizing the time of transfer, with bou…
Time Optimal Synthesis for Left--Invariant Control Systems on SO(3)
Ugo Boscain, Yacine Chitour
Consider the control system given by , where , and define two perpendicular left-invariant vector fields normalized so that $…
Stability of Planar Nonlinear Switched Systems
Ugo Boscain, Grégoire Charlot, Mario Sigalotti
We consider the time-dependent nonlinear system , where , and are two % smooth vector fields, globally asymptotic…