  In this work we present a model qubit whose basis states are eigenstates of a
multi-layered quantum dot. We show that the proper design of the quantum dot
results in qubit states that have excellent dynamical properties when a
time-dependent driving is applied to it. In particular, it is shown that a
simple sinusoidal driving is sufficient to obtain good quality Rabi
oscillations between the qubit states. Moreover, the switching between states
can be performed with very low leakage, even under off-resonance conditions. In
this sense, the quantum control of the qubit is robust under some perturbations
and achieved with simple means.
