Time-Minimal Control of Dissipative Two-level Quantum Systems: the   Generic Case
  The objective of this article is to complete preliminary results concerning the time-minimal control of dissipative two-level quantum systems whose dynamics is governed by Lindblad equations. The extremal system is described by a 3D-Hamiltonian depending upon three parameters. We combine geometric techniques with numerical simulations to deduce the optimal solutions. 
B. Bonnard, M. Chyba and D. Sugny