  The intricate interplay between light and matter provides effective tools for
manipulating topological phenomena. Here, we theoretically propose and
computationally show that circularly polarized light hold the potential to
transform the axion insulating phase into quantum anomalous Hall state in
MnBi2Te4 thin films, featuring tunable Chern numbers (ranging up to 2). In
particular, we reveal the spatial rearrangement of the hidden layer-resolved
anomalous Hall effect under light driven Floquet-engineering. Notably, upon
Bi2Te3 layer intercalation, the anomalous Hall conductance predominantly
localizes in the nonmagnetic Bi2Te3 layers that hold zero Berry curvature in
the intact state, suggesting significant magnetic proximity effect.
Additionally, we estimate variations in the magneto-optical Kerr effect, giving
a contactless method for detecting topological transitions. Our work not only
presents a strategy to investigate emergent topological phases, but also sheds
light on the possible applications of the layer Hall effect in topological
antiferromagnetic spintronics.
