Feasible Surface Plasmon Routing Based on the Self-Assembled InGaAs/GaAs Semiconductor Quantum Dot Located Between Two Silver Metallic Waveguides

We proposed an experimentally feasible scheme of nano-plasmonic switch and quantum router via the single self-assembled InGaAs/GaAs semiconductor quantum dot (SQD) with a V-type three-level energy structure located between two silver metallic waveguides. We studied theoretical transmission and transfer rates of single plasmons in such a multi-port system via the real-space approach, where our results showed that single plasmons from the input port could be switchable and redirected by controlling parameters, such as the intensity of the classical field, the detunings, and the interaction between the SQD and the waveguides. Our proposed scheme could be used not only in the design of quantum routers and quantum switches for the construction of quantum network but also in quantum photonic integrated circuits.