  A protocol is proposed for the rapid coherent loading of a Bose-Einstein
condensate into the ground state of an optical lattice, without residual
excitation associated with the breakdown of adiabaticity. The driving potential
required to assist the rapid loading is derived using the fast forward
technique, and generates the ground state in any desired short time. We propose
an experimentally feasible loading scheme using a bichromatic lattice
potential, which approximates the fast-forward driving potential with high
fidelity.
