引力波是否有助于真正的三体纠缠提取？
Do gravitational waves assist the genuine tripartite entanglement harvesting?
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中文总结 AI 辅助
本文研究引力波背景下三个Unruh-DeWitt探测器提取真正三体纠缠，发现引力波对纠缠有增强或抑制的双重作用，且三体纠缠对频率和间距呈非单调响应，可作为时空扰动的灵敏量子探针。
中文摘要 AI 辅助
我们研究了在引力波背景下，三个线性排列的Unruh-DeWitt探测器局域耦合到无质量标量场时，真正的三体纠缠的提取。我们表明，引力波在纠缠提取中扮演双重角色，根据系统参数的不同，要么增强要么抑制所提取的纠缠。特别是，真正的三体纠缠对引力波频率表现出显著的非单调响应，其特征是连续的抑制、类似共振的增强以及再次抑制，而在高频区域则趋近于其在闵可夫斯基时空中的对应值。其对探测器间距的依赖性也是非单调的，显示出在相应的二体纠缠行为中不存在的局部增强峰。因此，与二体纠缠相比，真正的三体纠缠在频率和空间域上对引力波扰动表现出更高的敏感性。这些结果表明，真正的三体纠缠可能为引力波引起的时空扰动提供一个灵敏的量子探针。
英文摘要
We investigate the harvesting of genuine tripartite entanglement by three linearly arranged Unruh-DeWitt detectors locally coupled to a massless scalar field in a gravitational wave background. We show that gravitational waves play a dual role in entanglement harvesting, either enhancing or suppressing the harvested entanglement depending on the system parameters. In particular, genuine tripartite entanglement exhibits a pronounced nonmonotonic response to the gravitational wave frequency, characterized by successive suppression, enhancement resembling resonance, and renewed suppression, while approaching its corresponding value in Minkowski spacetime in the regime of high frequencies. Its dependence on the detector separation is also nonmonotonic, displaying local enhancement peaks that are absent in the corresponding bipartite entanglement behavior. Compared with bipartite entanglement, genuine tripartite entanglement therefore exhibits a higher sensitivity to gravitational wave perturbations in both the frequency and spatial domains. These results suggest that genuine tripartite entanglement may provide a sensitive quantum probe of spacetime perturbations induced by gravitational waves.
发表机构
- Department of Physics, Liaoning Normal University（辽宁师范大学物理学院）
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