▎ 摘　　要

The ability of plasmonics nanostructures to enhance light-matter interaction due to trapping and localizing the light at the nanoscale make them an efficient platform for energy conversion devices. In the present paper, we theoretically study cross-Kerr nonlinear absorption of the metal nanoparticles-graphene nanodisks-quantum dots hybrid plasmonic system under the weak-field approximation. We obtain a giant cross-Kerr nonlinearity resulting in large nonlinear absorption coefficients in the visible region of the electromagnetic spectrum with low light intensity. We find that the cross-Kerr nonlinear optical properties of the system can be controlled in magnitude and sign by the geometrical parameters of the system and interacting fields. The system exhibits good stability with this nonlinear behavior providing a promising platform for many optical devices including energy conversion devices.