Characterization of dynamical regimes and entanglement sudden death in a microcavity quantum - dot system

TL;DR

This paper investigates how different dynamical regimes in a dissipative quantum-dot microcavity system affect entanglement, revealing that entanglement sudden death is characteristic of the strong coupling regime.

Contribution

It provides a detailed analysis linking dynamical regimes with entanglement behavior using Wigner function and concurrence measures.

Findings

Entanglement sudden death occurs predominantly in the strong coupling regime.

Temporal and frequency domain analyses reveal distinct dynamical behaviors.

The study employs a phenomenological temperature model for dissipation.

Abstract

The relation between the dynamical regimes (weak and strong coupling) and entanglement for a dissipative quantum - dot microcavity system is studied. In the framework of a phenomenological temperature model an analysis in both, temporal (population dynamics) and frequency domain (photoluminescence) is carried out in order to identify the associated dynamical behavior. The Wigner function and concurrence are employed to quantify the entanglement in each regime. We find that sudden death of entanglement is a typical characteristic of the strong coupling regime.