Entanglement evolution in a cascaded system with losses

TL;DR

This paper investigates how entanglement between atoms and fields evolves in a cascaded atom-cavity system with losses, providing analytical solutions and insights into the effects of dissipation on quantum correlations.

Contribution

It presents analytical solutions for entanglement dynamics in a lossy cascaded atom-cavity system, extending understanding of quantum correlations under realistic conditions.

Findings

Entanglement between atoms decreases due to losses.

Analytical expressions describe entanglement evolution.

Losses significantly impact quantum correlation dynamics.

Abstract

The dynamics of a cascaded system that consists of two atom-cavity subsystems is studied by using the quantum trajectory method. Unwanted losses are included, such as photon absorption and scattering by the cavity mirrors and spontaneous emission of the atoms. Considering an initially excited two-level atom in the source subsystem, analytical solutions are obtained. The entanglement evolution is studied for the two atoms and for the two intracavity fields.