Environment induced entanglement in many-body mesoscopic systems

TL;DR

This paper demonstrates that two non-interacting spin chains can become entangled at the mesoscopic level solely due to a common heat bath, revealing a noise-induced mechanism for quantum correlations.

Contribution

It introduces a novel mechanism where a shared environment induces entanglement between non-interacting many-body systems at the mesoscopic scale.

Findings

Entanglement arises from a common heat bath without direct interaction.

Quantum correlations depend on dissipation strength and bath temperature.

Mesoscopic observables reveal environment-induced entanglement.

Abstract

We show that two, non interacting, infinitely long spin chains can become globally entangled at the mesoscopic level of their fluctuation operators through a purely noisy microscopic mechanism induced by the presence of a common heat bath. By focusing on a suitable class of mesoscopic observables, the behaviour of the dissipatively generated quantum correlations between the two chains is studied as a function of the dissipation strength and bath temperature.