Nonlinear optical response properties of a quantum dot embedded in a semiconductor microcavity : possible applications in quantum communication platforms

TL;DR

This paper explores the nonlinear optical properties of a quantum dot in a microcavity, revealing tunable bistability, slow light, and optomechanical switching potential for quantum communication applications.

Contribution

It introduces a theoretical analysis of optical bistability, MIA, and Fano resonance in a quantum dot-microcavity system, highlighting tunability and application prospects.

Findings

Bistability can be tuned by QD-cavity coupling.

System exhibits anomalous dispersion suitable for slow light.

Potential use as all-optomechanical Kerr switch.

Abstract

We theoretically investigate optical bistability, mechanically induced absorption (MIA) and Fano resonance of a hybrid system comprising of a single quantum dot (QD) embedded in a solid state microcavity interacting with the quantized cavity mode and the deformation potential associated with the lattice vibration. We find that the bistability can be tuned by the QD-cavity mode coupling. We further show that the normalized power transmission displays anomalous dispersion indicating that the system can be used to generate slow light. We also demonstrate the possibility of using the system as all optomechanical Kerr switch.