▎ 摘　　要

We investigate quantum pumping of massless Dirac fermions in an ideal (impurity free) double layer of graphene. The pumped current is generated by adiabatic variation in two gate voltages in the contact regions to a weakly doped double graphene sheet. At the Dirac point and for a wide bilayer with width W >> length L, we find that the pumped current scales linearly with the interlayer coupling length l(perpendicular to) for L/l(perpendicular to)<< 1, is maximal for L/l(perpendicular to)similar to 1, and crosses over to a ln(L/l(perpendicular to))/(L/l(perpendicular to)) dependence for L/l(perpendicular to)>> 1. We compare our results with the behavior of the conductance in the same system and discuss their experimental feasibility.