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We study the transport properties of a monolayer transition metaldichalcogenide (TMDC) ribbon subject to a time periodic circularly polarizedlaser field. First, we calculate the quasienergy spectrum within the frameworkof the Floquet theory and analyze the nontrivial topology of the Floquet bulkgaps. The later is revealed by the presence of chiral edge states inside thebulk gaps in finite samples, in agreement with the calculation of theappropriate winding numbers as a function of both the energy and the amplitudeof the laser field. The effect of the time dependent perturbation on theequilibrium edge states is also analyzed. Finally, we calculate thetwo-terminal conductance and discuss how the above mentioned effects manifeston it. In particular, besides the expected suppression of the bulk conductanceand the emergence of edge transport at the Floquet gaps, we find that there isan asymmetry between left and right transmission coefficients (in the zigzagcase), leading to pumping effects. In addition, we found that the laser fieldcan lead to a complete switch off of the linear conductance when the later isdominated by the equilibrium edge states.

Floquet Spectrum and Two-Terminal Conductance of a Transition Metal Dichalcogenide Ribbon under a Circularly Polarized Laser Field