Information loss in local dissipation environments

TL;DR

This paper investigates how entanglement and information decay in two-qubit systems interacting with thermal and squeezed reservoirs, revealing conditions that prolong their survival and instances of sudden information loss.

Contribution

It analyzes the dynamics of entanglement and information in dissipative environments, highlighting the protective effect of squeezed reservoirs on quantum correlations.

Findings

Squeezed reservoirs can prolong entanglement and information survival.

Thermal reservoirs cause sudden death of information.

Entanglement decay is sensitive to reservoir parameters.

Abstract

The sensitivity of entanglement to the thermal and squeezed reservoirs' parameters is investigated regarding entanglement decay and what is called sudden-death of entanglement, ESD, for a system of two qubit pairs. The dynamics of information is investigated by means of the information disturbance and exchange information. We show that for squeezed reservoir, we can keep both of the entanglement and information survival for a long time. The sudden death of information is seen in the case of thermal reservoir.