  We have investigated the role of pseudospin polarization in electron wave
packet dynamics in pristine graphene and in a graphene antidot lattice subject
to an external magnetic field. Employing a Green's function formalism, we show
that the electron dynamics can be controlled by tuning pseudospin polarization.
We find that in Landau quantized pristine graphene both the propagation of an
electron wave packet and Zitterbewegung oscillations strongly depend on
pseudospin polarization. The electron wave packet is found to propagate in the
direction of initial pseudospin polarization. We also show that, in this
system, the propagation of an electron can be enhanced in any desired direction
by carving a one dimensional antidot lattice in that direction. The study
suggests that a graphene antidot lattice can serve as a channel for electron
transport with the possibility of tunability by means of pseudospin
polarization, antidot potential and applied normal magnetic field strength.
