Entanglement of Two Quantum Dots with the Flip-Flop Interaction coupled to Plasmonic Waveguide

TL;DR

This paper theoretically explores how two quantum dots coupled via a plasmonic waveguide can achieve high entanglement, with potential applications in quantum communication and computation.

Contribution

It provides analytical solutions showing how to optimize entanglement in quantum dots through various system parameters, advancing quantum information processing methods.

Findings

High entanglement achievable by tuning coupling strength and detuning.

Entanglement persists even with near-zero waveguide mode interaction.

System offers versatile ways for quantum communication and computation.

Abstract

We investigate theoretically the entanglement of two quantum dots (QDs) coupled to metallic nanowaveguide in the presence of the flip-flop interaction with the analytical solutions of eigenvalue equations of the coupled system. High entanglement of two QDs could be achieved by adjusting the direct coupling strength of the QDs, the interaction of QDs with near-zero waveguide modes, interparticle distance of the QDs, total dissipation and detuning even when two QDs are resonant with the incident single plasmon. The discussed system with the flip-flop interaction provides us rich way to realize the quantum information processing such as quantum communication and quantum computation.