  Shuttling protocols designed by shortcut-to-adiabaticity techniques may
suffer from perturbations and imperfect implementations. We study the motional
excitation of a single ion shuttled in harmonic traps with time-dependent,
"systematic" oscillatory perturbations around the nominal parameters. These
elementary perturbations could form any other by superposition. Robust
shuttling strategies are proposed and compared, and optimizations are
performed.
