2D Asymmetric Diffraction Induced by Vortex Light in Quantum Dot Molecule1Systems under Spontaneously Generated Coherence

Quantum dot molecules (QDMs), with their unique optoelectronic properties derived from quantum confinement and tunneling effects, are not only promising for advanced photonic applicationsbut also provide the intrinsic advantage of nanoscale dimensions, which is critical for integratedminiaturized devices. In this work, we propose a novel scheme to realize a high-intensity twodimensional asymmetric electromagnetically induced diffraction grating in a QDMs system by incorporating spontaneously generated coherence (SGC) and dual tunneling channels. Our theoretical analysis shows that the presence of SGC markedly enhances the intensity and efficiency of higher order diffractions.