Efficient exciton generation in a semiconductor quantum-dot–metal-nanoparticle composite structure using conventional chirped pulses

We consider a nanostructure consisting of semiconductor quantum dot coupled to metal nanoparticle, and we show with numerical simulations that the exciton state can be robustly generated from ground even for small interparticle distances, using conventional chirped pulses Gaussian envelope. The asymmetry observed in final population respect chirp sign applied is explained nonlinear density matrix equations describing system attributed real part parameter emerging interaction between excitons plasmons nanoparticle. simplicity pulses, which also easily implemented laboratory, makes proposed robust control scheme potentially useful implementation ultrafast nanoswitches information processing tasks dots.