Effective quasiparticle approach for a Cavity-QDots System

TL;DR

This paper introduces a quasiparticle approach to analyze the stationary states of a two quantum dots-cavity system, revealing that a polaritonic quasiparticle description best captures the system's physics across various regimes.

Contribution

The study develops and compares three effective quasiparticle schemes for the Hamiltonian of a quantum dots-cavity system, highlighting the superiority of the polaritonic approach.

Findings

Polaritonic quasiparticle approach better captures system physics.

Different schemes reveal insights into energy gap optimization.

Quantum measures indicate the polaritonic description's completeness.

Abstract

In this work, we present a quasiparticle strategy to study the Hamiltonian description of the stationary states for two quantum dots--cavity system. We consider three different effective schemes of quasiparticles that give an in-depth insight into the physics involved in the Hamiltonian eigenstates for parameters that optimize or minimize the energy gap condition. We analyze features of quantum measures like fractional composition, linear entropy, and concurrence to observe which one description gives the complete physical information. Our findings show that a polaritonic---light-matter quasiparticle---approach catch better the physics contained in the whole regimes considered.