Maximal Steered Coherence in Accelerating Unruh-DeWitt Detectors

TL;DR

This paper explores how relativistic acceleration, via Unruh temperature, affects quantum coherence in Unruh-DeWitt detectors, revealing conditions that preserve or enhance coherence under extreme conditions.

Contribution

It provides a detailed analysis of maximal steered coherence dependence on Unruh temperature and energy levels, highlighting new ways to maintain quantum coherence in relativistic settings.

Findings

MSC depends strongly on Unruh temperature

Higher energy levels help preserve MSC

MSC can be generated with increasing Unruh temperature

Abstract

Quantum coherence, a fundamental aspect of quantum mechanics, plays a crucial role in various quantum information tasks. However, preserving coherence under extreme conditions, such as relativistic acceleration, poses significant challenges. In this paper, we investigate the influence of Unruh temperature and energy levels on the evolution of maximal steered coherence (MSC) for different initial states. Our results reveal that MSC is strongly dependent on Unruh temperature, exhibiting behaviors ranging from monotonic decline to non-monotonic recovery, depending on the initial state parameter. Notably, when \Delta=1, MSC is generated as Unruh temperature increases. Additionally, we observe that higher energy levels help preserve or enhance MSC in the presence of Unruh effects. These findings offer valuable insights into the intricate relationship between relativistic effects and quantum coherence, with potential applications in developing robust quantum technologies for non-inertial environments.