Transport Enhancement of Bose Hubbard Systems via Barrier Modulation

We show that transport characteristics of disordered, lowest band lattices can be greatly-enhanced by modulating the field intensity that generates the lattice structure. We propose two resonant modulation schemes: one requires independent site-by-site control of the tunneling rates, the second involves a global modulation of intensity that generates the lattice structure. We also present effective stationary models for these complicated dynamical systems. For the specific five-site lattices discussed, we numerically predict transport gains ranging from $3\times 10^6$ to roughly $4\times 10^{10}$.