Environment induced entanglement in Gaussian open quantum systems

TL;DR

This paper demonstrates that Gaussian open quantum systems can develop a unique entangled stationary state influenced by environmental factors, with entanglement depending on temperature and interaction strength.

Contribution

It reveals conditions under which Gaussian open quantum systems attain entangled stationary states, highlighting the roles of temperature and interaction strength.

Findings

Entangled stationary states exist at low temperatures and weak interactions.

Any initial state converges to the entangled stationary state.

Entanglement depends on environmental parameters.

Abstract

We show that a bipartite Gaussian quantum system interacting with an external Gaussian environment may possess a unique Gaussian entangled stationary state and that any initial state converges towards this stationary state. We discuss dependence of entanglement on temperature and interaction strength and show that one can find entangled stationary states only for low temperatures and weak interactions.