Giant Controllable Near-Infrared Nonlinear Amplification in Metal Nanoparticles-Graphene Nanodisks-Quantum Dots Plasmonic Hybrid Systems with Low Light Intensity

Graphene hybrid plasmonic systems can enable highly confined optical energy associated with large propagation distances, paving the way to interesting nonlinear potential applications. In this paper, we theoretically investigate the near infrared cross-Kerr nonlinearity in the metal nanoparticles-graphene nanodisks-quantum dots hybrid plasmonic systems using the density matrix approach with the iterative perturbation technique. The system exhibits giant near infrared nonlinear amplification with low light intensity of almost \( 1\text {mW\,cm}^{-2}\) $1{\text{mW,cm}}^{-2}$ . Moreover, the sign of the nonlinear absorption coefficient can be externally manipulated by the detuning and Rabi frequency of the interacting fields. Therefore, our proposed metal nanoparticles-graphene nanodisks-quantum dots hybrid plasmonic systems could potentially be employed in various applications including communication, optical computation, and efficient sensing and imaging devices that are required for accurate medical diagnostics.