Bose-Einstein condensates in disordered optical lattices

Abstract

In our experiment the disorder is superimposed on a one dimensional optical lattice with a lattice spacing of 412 nm and a trap depth of up to a few hundred recoil energies. We present several methods to introduce disorder in our experimental system by using additional lattice potentials or pseudorandom dipole potential. The potential depth and the trap spacing allow for control of the trapping frequency and tunnelling rate. These potentials have recently allowed for experiments in the regime where the systems is dominated by strong correlations