Does anti-Unruh effect assist quantum entanglement and coherence?

TL;DR

This paper investigates how the Unruh and anti-Unruh effects influence quantum entanglement and coherence, revealing that the anti-Unruh effect can enhance entanglement while reducing coherence, challenging previous assumptions.

Contribution

It is the first study to analyze the anti-Unruh effect's impact on quantum resources, showing contrasting effects on entanglement and coherence.

Findings

Unruh effect reduces entanglement but enhances coherence

Anti-Unruh effect enhances entanglement but reduces coherence

Results challenge previous notions about quantum resource effects

Abstract

In this paper, we use the concepts of quantum entanglement and coherence to analyze the Unruh and anti-Unruh effects based on the model of Unruh-DeWitt detector. For the first time, we find that (i) the Unruh effect reduces quantum entanglement but enhances quantum coherence; (ii) the anti-Unruh effect enhances quantum entanglement but reduces quantum coherence. This surprising result refutes the notion that the Unruh effect can only destroy quantum entanglement and coherence simultaneously, and that the anti-Unruh can only protect quantum resources. Consequently, it opens up a new source for discovering experimental evidence supporting the existence of the Unruh and anti-Unruh effects.