Cavity versus dot emission in strongly coupled quantum dots-cavity systems

TL;DR

This paper explores the complex spectral features of multiple quantum dots strongly coupled to a microcavity, revealing dark states, nonlinearities, and interference effects that produce unique emission lineshapes.

Contribution

It provides a detailed analysis of spectral lineshapes in quantum dot-cavity systems, highlighting the coexistence of various quantum phenomena and their impact on emission characteristics.

Findings

Identification of dark states and quantum nonlinearities.

Observation of emission dips and interference effects.

Complex lineshapes arising from multiple quantum phenomena.

Abstract

We discuss the spectral lineshapes of N quantum dots in strong coupling with the single mode of a microcavity. Nontrivial features are brought by detuning the emitters or probing the direct exciton emission spectrum. We describe dark states, quantum nonlinearities, emission dips and interferences and show how these various effects may coexist, giving rise to highly peculiar lineshapes.