Scattering of a Single Plasmon by Three Non-equally Spaced Quantum Dots System Coupled to One-Dimensional Waveguide

TL;DR

This paper theoretically investigates how a single plasmon interacts with three non-equally spaced quantum dots in a one-dimensional waveguide, demonstrating control over transmission and reflection properties.

Contribution

It introduces a method to control plasmon transmission using quantum dot detuning and spacing, enabling the construction of a half-transmitting mirror.

Findings

Transmission and reflection can be switched on or off.

A half-transmitting mirror can be constructed with three quantum dots.

Complete transmission peaks occur near zero detuning.

Abstract

Scattering properties of a single plasm on interacting with three non-equally spaced quantum dots coupled to one-dimensional surface plasmonic waveguide is investigated theoretically via the real-space approach. It is demonstrated that the transmission and reflection of a single plasmon can be switched on or off by controlling the detuning and changing the interparticle distances between the quantum dots. By controlling the transition frequencies and interparticle distances of QDs, one can construct a half-transmitting mirror with three QDs system. We also showed that controlling the transition frequencies and interparticle distances of QDs results in the complete transmission peak near the zero detuning.