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We investigate the tunneling properties of a two-species few-boson mixture ina one-dimensional triple well and harmonic trap. The mixture is prepared in aninitial state with a strong spatial correlation for one species and a completelocalization for the other species. We observe a correlation-induced tunnelingprocess in the weak interspecies interaction regime. The onset of theinterspecies interaction disturbes the spatial correlation of one species andinduces tunneling among the correlated wells. The corresponding tunnelingproperties can be controlled by the spatial correlations with an underlyingmechanism which is inherently different from the well known resonant tunnelingprocess. We also observe the correlated tunneling of both species in theintermediate interspecies interaction regime and the tunneling via higher bandstates for strong interactions.

The impact of spatial correlation on the tunneling dynamics of few-boson mixtures in a combined triple well and harmonic trap