207 citations · 831 across the 68 of their papers we have counts for
6 papers · 2 filters
An obstruction to small-time controllability of the bilinear Schr{ö}dinger equation
Ivan Beschastnyi, Ugo Boscain, Mario Sigalotti
In this article we discuss which controllability properties of classical Hamiltonian systems are preserved after quantization. We discuss some necessary and some sufficient conditi…
Bounds on time-optimal concatenations of arcs for two-input driftless 3D systems
M. Sigalotti
We study a driftless system on a three-dimensional manifold driven by two scalar controls. We assume that each scalar control has an independent bound on its modulus and we prove t…
Semi-conical eigenvalue intersections and the ensemble controllability problem for quantum systems
Nicolas Augier, Ugo Boscain, Mario Sigalotti
We study one-parametric perturbations of finite dimensional real Hamiltonians depending on two controls, and we show that generically in the space of Hamiltonians, conical intersec…
On the compatibility between the adiabatic and the rotating wave approximations in quantum control
Nicolas Augier, Ugo Boscain, Mario Sigalotti
In this paper, we discuss the compatibility between the rotating-wave and the adiabatic approximations for controlled quantum systems. Although the paper focuses on applications to…
Fuller singularities for generic control-affine systems with an even number of controls
Francesco Boarotto, Yacine Chitour, Mario Sigalotti
In this article we study how bad can be the singularities of a time-optimal trajectory of a generic control affine system. In the case where the control is scalar and belongs to a…
Dwell-time control sets and applications to the stability analysis of linear switched systems
Francesco Boarotto, Mario Sigalotti
We propose an extension of the theory of control sets to the case of inputs satisfying a dwell-time constraint. Although the class of such inputs is not closed under concatenation,…