Fig. 5: Recovering quantum interference in twisted-bilayer MoSe2 at 5 K. | Nature Communications

Fig. 5: Recovering quantum interference in twisted-bilayer MoSe2 at 5 K.

From: Twist-angle engineering of excitonic quantum interference and optical nonlinearities in stacked 2D semiconductors

Fig. 5

Dependence of normalized SHG spectra on excitation energy for monolayer MoSe2 (a) and twisted-bilayer MoSe2 with a twist angle close to 0° (b), with the proposed corresponding excitonic three-level systems illustrated as insets. The condition of an equidistant excitonic three-level system for single-pulse quantum interference is only fulfilled in twisted-bilayer MoSe2 and not in monolayer MoSe2.

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