Delayed birth of distillable entanglement in the evolution of bound entangled states

TL;DR

This paper investigates how bound entangled states can evolve into distillable entanglement over time in a system of three-level atoms, highlighting phenomena like delayed sudden birth of entanglement.

Contribution

It demonstrates the dynamical generation of distillable entanglement from bound entangled states in atomic systems, including the delayed birth effect at specific atom separations.

Findings

Stationary distillable entanglement can be generated from bound entangled states.

Delayed sudden birth of entanglement occurs at atom separations comparable to the radiation wavelength.

Asymptotic states can become distillably entangled through system dynamics.

Abstract

The dynamical creation of entanglement between three-level atoms coupled to the common vacuum is investigated. For the class of bound entangled initial states we show that the dynamics of closely separated atoms generates stationary distillable entanglement of asymptotic states. We also find that the effect of delayed sudden birth of distillable entanglement occurs in the case of atoms separated by a distance comparable with the radiation wavelength.