Light-wave-controlled Haldane model in monolayer hexagonal boron nitride

Nature, Published online: 15 April 2024; doi:10.1038/s41586-024-07244-z

We introduce strong tailored light-wave-driven time-reversal symmetry breaking in monolayer hexagonal boron nitride, realizing a sub-laser-cycle controllable analogue of the topological model of Haldane and inducing non-resonant valley polarization.