  We propose a scheme to trap and filter electrons, valley dependently, on a
scale beyond the diffraction limit, in a gapped Dirac system using a circularly
polarized light beam and a microscale metallic resonator. The main mechanism
allowing the selection is the valley dependent break of the time reversal
symmetry. Indeed in one valley, the light partially closes the already existing
gap while it opens it in the other one. This difference in the band structure
close to the Dirac points, induces a change in the dynamics of the electrons,
leading to a valley router behaviour of the system.
