Quantum correlations from advantageous quasiparticle pictures in a Cavity-QDots System

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 optimise or minimise the energy gap condition. We analyse features of quantum measures like fractional composition, linear entropy, and concurrence to observe which one description gives the more complete physical information. Our findings show that a polaritonic-light-matter quasiparticle-approach catches better the physics contained in the whole regimes considered.