Constructive role of dissipation for driven coupled bosonic modes

TL;DR

This paper demonstrates that dissipation can enhance entanglement in driven coupled bosonic modes, revealing a non-intuitive interplay between noise and coherence in non-equilibrium quantum systems.

Contribution

It shows that dissipation can be constructive for entanglement in driven bosonic systems, especially with asymmetric coupling to baths, challenging traditional views.

Findings

Dissipation can increase steady-state entanglement.

Entanglement exhibits non-monotonic dependence on decay rates.

Asymmetric bath coupling influences entanglement enhancement.

Abstract

We theoretically investigate a system of two coupled bosonic modes subject to both dissipation and external driving. We show that in the steady state the degree of entanglement between the coupled bosonic modes can be enhanced by dissipation. The non-monotonic dependence of entanglement on the decay rates is observed when the bosonic modes are asymmetrically coupled to their local baths. This counterintuitive result opens a new way to better understand the interplay between noise and coherence in continuous variable systems driven away from equilibrium.