Nonlinear optical nonreciprocity in a surface plasmon–exciton coupled asymmetric cavity system

Topical issue “Dynamics of systems on the nanoscale (2021)”

“…The results reported in Ref. [35] may provide references for novel design and experimental realization of nonlinearity-based optical nonreciprocal devices.…”

“…A study [35] investigated theoretically optical nonreciprocity in the quantum dot-metal nanoparticle (QD-MNP) hybrid system inside an asymmetric cavity. Optical nonreciprocity and nonreciprocal devices have attracted significant research interest in recent years due to their important applications in optical communication, information processing, etc.…”

“…According to the outcomes of Ref. [35] due to the optical nonlinear effect, the input-output relationship of the cavity shows a bistable S-shaped curve, which can be employed to achieve optical nonreciprocity in the asymmetric cavity system. Nonlinear interaction between photons and QD excitons can be strengthened by using the surface plasmon effect in the QD-MNP nanostructure, providing the possibility of achieving a better performance of optical nonreciprocity compared with the single QDs.…”