  We study the fast transport of a particle or a Bose-Einstein condensate in a
harmonic potential. An exact expression for the final excitation energy in
terms of the Fourier transform of the trap acceleration is used to engineer
optimal transport protocols (with no final excitation) that are robust with
respect to spring-constant errors. The same technique provides a way to design
the simultaneous and robust transport of a few non-interacting species that
experience different harmonic trap frequencies in the same trap.
