Polariton parametric photoluminescence in spatially inhomogeneous systems
Davide Sarchi, Michiel Wouters, Vincenzo Savona

TL;DR
This paper develops a comprehensive theoretical framework for polariton parametric photoluminescence in inhomogeneous systems, applying it to disordered microcavities and matching experimental observations.
Contribution
It introduces a generalized Bogoliubov de Gennes approach to analyze photoluminescence in disordered polariton systems, bridging theory and experiment.
Findings
Disorder affects the photoluminescence pattern in momentum space.
Theoretical results agree well with experimental data.
The formalism can be applied to various inhomogeneous polariton systems.
Abstract
A general theory of polariton parametric photoluminescence in spatially inhomogeneous systems is developed. The quantum Langevin equations are solved in a generalized Bogoliubov de Gennes approximation. We apply the formalism to the specific case of a disordered microcavity. In this case, we numerically solve the equations for the coherent emission and the photoluminescence. We describe the effect of the exciton and photon disorder on the photoluminescence pattern exhibited in momentum space, finding a good agreement with the experimental observations.
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