Andrei A. Agrachev, Ugo V. Boscain, Jean-Paul Gauthier, Mario Sigalotti. A note on time-zero controllability and density of orbits for quantum systems. In 56th IEEE Annual Conference on Decision and Control, CDC 2017, Melbourne, Australia, December 12-15, 2017. pages 5535-5538, IEEE, 2017. [doi]
Abstract is missing.