A Comparative Study of Coupled High-Q Cavity-Quantum Dot System Regarding Dipole Induced Transparency

TL;DR

This paper compares two theoretical approaches, IOF and IPM, for analyzing the transmission spectrum of a coupled cavity-quantum dot system, highlighting differences in explaining Dipole Induced Transparency especially off-resonance.

Contribution

It provides a detailed comparison between IOF and IPM methods, revealing limitations of IPM in capturing off-resonant DIT phenomena in strong coupling regimes.

Findings

DIT cannot be fully explained by IPM off-resonance

Both methods show vacuum Rabi splitting on-resonance

IPM fails to capture atomic-like polariton features

Abstract

We present the differences between Input-Output formalism (IOF) and Incoherent Pumping Mechanism (IPM) derived from Lindblad Master Equation approach in terms of the transmission spectrum of Coupled high-Q Cavity with Quantum Dot system in the strong coupling regime. Fullwidth- half-maximum (FWHM) and the peak transmission of Dipole Induced Transparency (DIT) are inquired for detailed comparison in on-resonant and off-resonant conditions. We have found that DIT phenomenon in off-resonant case cannot be explained entirely by IPM although both methods can exhibit the same Vacuum Rabi splitting in on-resonant case. We have concluded that polariton having atomic-like feature in transmission spectrum could not be captured completely by IPM.