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We show fledgling quantum spin Hall phase by the normal incidence ofnear-infrared circularly polarized radiation field on Bismuth Selenide dopedwith magnetic impurities. For this purpose, we start with a low-energytwo-dimensional, time-dependent Hamiltonian. The time dependence in theHamiltonian arises due to the optical field describable by the associated gaugefield. We make use of the Floquet theory in the high-frequency limit toinvestigate the system. The optical field tuneability leads to the emergence ofthe spin Hall phase, when intensity of the incident radiation is high, from thequantum anomalous Hall phase. Interestingly, the former phase is achievablehere even in the presence of the magnetic impurities.

Tunable Radiation Field Aided Quantum Spin Hall Phase in Bi2Se3Thin Film