Abstract
In an optical superlattice of triple wells containing two mutually interacting atom species in adjacent wells, we show that one species can be transported through the positions of the other species while avoiding significant overlap and direct interaction. The transfer protocol is optimized to be robust against missing atoms of either species in any lattice site, as well as against lattice fluctuations. The degree and the duration of the interspecies overlap during passage can be tuned, making possible a controlled large-scale interaction-induced change of internal states.
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