Controllable Normal mode splitting and Switching performance in hybrid optomechanical semiconductor microcavity containing single quantum dot

TL;DR

This paper theoretically investigates optical bistability and switching in a hybrid semiconductor microcavity system with a quantum dot, demonstrating controllable nonlinear optical behavior suitable for switches and sensors.

Contribution

It introduces a novel hybrid optomechanical system with controllable bistability enabled by quantum dot coupling and optomechanical interactions.

Findings

Optical bistability can be controlled by laser power and coupling parameters.

Energy exchange between mechanical and optical modes is observable.

System shows potential for sensitive optical switching and sensing applications.

Abstract

We theoretically explore optical bistability for possible signature of all optical switching and their performance in a hybrid quantum optomechanical system comprising of two semiconductor microcavity coupled optically. One of the cavity is driven by an external optical pump laser while the second cavity which contains a quantum dot is indirectly driven by light transmitted from the first cavity. The generated bistable behavior due to optomechanical nonlinearity shows a typical optical switching behavior and it can be controlled by changing the laser power, QD cavity coupling, rocking parameter, and the optomechanical coupling. A clear signature of energy exchange between mechanical optical modes is visible from the mechanical displacement spectrum. These results suggest that the present system can be used for an application in sensitive optical switch and optical sensors.