We discuss fast frictionless cooling techniques in the framework of sympathetic cooling of cold atomic mixtures. It is argued that optimal cooling of an atomic species - in which the deepest quantum degeneracy regime is achieved - may be obtained by means of sympathetic cooling with another species whose trapping frequency is dynamically changed to maintain constancy of the Lewis-Riesenfeld adiabatic invariant. Advantages and limitations of this cooling strategy are discussed, with particular regard to the possibility of cooling Fermi gases to a deeper degenerate regime.
@article{arxiv.1109.4908,
title = {Optimized sympathetic cooling of atomic mixtures via fast adiabatic strategies},
author = {Stephen Choi and Roberto Onofrio and Bala Sundaram},
journal= {arXiv preprint arXiv:1109.4908},
year = {2011}
}