Effect of relativistic acceleration on tripartite entanglement in Gaussian states

TL;DR

This paper investigates how relativistic acceleration impacts the genuine tripartite entanglement in Gaussian states, revealing degradation effects relevant for quantum information protocols in noninertial frames.

Contribution

It provides the first detailed analysis of tripartite Gaussian entanglement degradation due to relativistic acceleration, extending previous bipartite studies.

Findings

Tripartite entanglement decreases with increasing acceleration.

Different initial states and trajectories influence entanglement degradation.

Results are relevant for quantum communication in gravitational fields.

Abstract

Efficiencies of quantum information protocols can be affected by the noninertial motion of involved parties, e.g., in a gravitational field. Most of the previous studies focused on the effects of such a motion on a bipartite entanglement as a resource. We show how a tripartite Gaussian resource state of continuous variables is affected by the acceleration of the observers. Specifically, we analyze how genuine tripartite entanglement degrades due to the motion for various initial states and trajectories of the involved parties.