Entanglement sudden death and sudden birth in two uncoupled spins

TL;DR

This paper explores how entanglement between two spins can abruptly disappear or reappear due to environmental interactions, highlighting phenomena relevant for quantum information processing.

Contribution

It demonstrates the occurrence of entanglement sudden death and birth in two uncoupled spins interacting with a common environment via Heisenberg XX dynamics.

Findings

Entanglement can suddenly vanish or reemerge due to environmental effects.

The study provides insights into controlling entanglement in spin systems.

Results are relevant for quantum information applications.

Abstract

We investigate the entanglement evolution of two qubits interacting with a common environment trough an Heisenberg XX mechanism. We reveal the possibility of realizing the phenomenon of entanglement sudden death as well as the entanglement sudden birth acting on the environment. Such analysis is of maximal interest at the light of the large applications that spin systems have in quantum information theory.