# Feasible Surface Plasmon Routing Based on The Self-assembled InGaAs/GaAs Semiconductor Quantum Dot Located between Two Silver Metallic Waveguides

## TL;DR

This paper presents a theoretically feasible nano-plasmonic switch and quantum router using a self-assembled InGaAs/GaAs quantum dot between silver waveguides, enabling controlled plasmon routing for quantum networks.

## Contribution

It introduces a novel scheme for quantum routing and switching based on a self-assembled quantum dot integrated with metallic waveguides, with detailed transmission analysis.

## Key findings

- Single plasmons can be switched and redirected by controlling external parameters.
- The scheme demonstrates potential for quantum network components.
- Theoretical analysis confirms feasibility for quantum photonic circuits.

## Abstract

We proposed an experimentally feasible scheme of nano-plamonic 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 theoretically transmission and transfer rates of single plasmons in such a multi-ports 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.

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Source: https://tomesphere.com/paper/1906.04244