High-fidelity rapid ground-state loading of an ultracold gas into an   optical lattice
  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. 
Shumpei Masuda, Katsuhiro Nakamura, Adolfo del Campo
cond-mat.quant-gas physics.atom-ph quant-ph