Switching of a single propagating plasmon by two quantum dots system

Abstract

We investigated the scattering property of a single plasmon interacting with two quantum dots coupled to one-dimensional surface plasmonic waveguide. We demonstrated that the transmission of a single plasmon could be switched on or off by adjusting spectral detuning and controlling spatial separation of the two quantum dots. These transport properties of the nanosystem could find the applications in plasmonic nanodevices and quantum information processing.