Entanglement dynamics under local Lindblad evolution

TL;DR

This paper investigates how entanglement evolves under local Lindblad-type heat bath interactions, revealing that entanglement sudden death is common at finite temperatures but absent at zero temperature for certain states.

Contribution

It provides a detailed analysis of entanglement dynamics under local Lindblad evolution, highlighting conditions for entanglement sudden death in bipartite and multipartite systems.

Findings

ESD is generic at non-zero bath temperature.

One-sided zero-temperature baths do not cause ESD in pure two-qubit states.

Entanglement dynamics depend on temperature and local interaction specifics.

Abstract

The phenomenon of entanglement sudden death (ESD) in finite dimensional composite open systems is described here for both bi-partite as well as multipartite cases, where individual subsystems undergo Lindblad type heat bath evolution. ESD is found to be generic for non-zero temperature of the bath. At T=0, one-sided action of the heat bath on pure entangled states of two qubits does not show ESD.