Transport Properties of a Single Plasmon Interacting with a Hybrid Exciton of a Metal Nanoparticle-Semiconductor Quantum Dot System Coupled to Plasmonic Waveguide

TL;DR

This paper theoretically investigates how a single plasmon interacts with a hybrid exciton formed in a metal nanoparticle-semiconductor quantum dot system coupled to a plasmonic waveguide, with implications for quantum device design.

Contribution

It introduces a real-space approach to analyze plasmon transport in a hybrid MNP-SQD system and demonstrates control over transmission and reflection via external parameters.

Findings

Transmission and reflection can be tuned by the control field frequency.

Hybrid exciton formation affects plasmon transport properties.

Potential applications in quantum switching and nanomirrors.

Abstract

Transport properties of a single plasmon interacting with a hybrid system composed of a semiconductor quantum dot (SQD) and a metal nanoparticle (MNP) coupled to one-dimensional surface plasmonic waveguide are investigated theoretically via the real-space approach. We considered that the MNP-SQD interaction leads to the formation of a hybrid exciton and the transmission and reflection of a single incident plasmon could be controlled by adjusting the frequency of the classical control field applied to the MNP-SQD hybrid nanosystem, the kinds of metallic nanoparticles and the background media, respectively. The transport properties of a single plasmon interacting with such a hybrid nanosystem discussed here could find the applications in the design of next-generation quantum devices such as single photon switching and nanomirrors, and in quantum information processing.