  We propose an experimental scheme to observe non-abelian statistics with cold
atoms in a two dimensional optical lattice. We show that the Majorana-Schockley
modes associated with line defects obey non-abelian statistics and can be
created, braided, and fused, all through adiabatic shift of the local chemical
potentials. The detection of the topological qubit is transformed to local
measurement of the atom number on a single lattice site. We demonstrate the
robustness of the braiding operation by incorporating noise and experiential
imperfections in numerical simulations, and show that the requirement fits well
with the current experimental technology.
