Visibility pattern of Bose-Fermi mixtures in one-dimensional incommensurate lattices

摘要

We performed numerical simulations to demonstrate localization phenomena of Bose-Fermi mixture systems on incommensurate optical lattices by changing Bose-Bose and Bose-Fermi interactions. Visibility patterns of the bosons were measured to observe bosonic coherence in various selections of the interaction parameters. We found that the coherence was enhanced with repulsive Bose-Fermi interactions. It was also enhanced with attractive Bose-Fermi interactions but only in certain conditions. The enhancement by repulsive interactions and that by attractive interactions occurred with different mechanisms.