Quantum oscillations induced by graphene-CQDs coupling. Panels (c) and (a) are the magnetoconductance Δ G trace at low magnetic field regime obtain before and after the deposition of CQDs (black solid line). The red dashed line shows the smoothed slow varying background of the Δ G . The inset in panel (a) shows the close-up of Δ G around B = 0 T (black symbols), where a signature of weak localization is identified and fitted (red solid line). The same fitting is also performed in panel (c) and shown with the red solid line. Panels (d) and (b) are the high field magnetoconductance G(B) before and after the deposition of CQDs. A smoothed background (red dashed line) is shown as a guideline for the oscillatory structures. Panels (e) and (f) are the FFT spectra of the oscillatory components for low field and high field magnetoconductance. Panels (g) and (h) are the schematics for quantum edge state scattering without and with the CQD potential. All the measurements are carried out at 1.9 K.