论文标题
从带有纠缠粒子探测器的量子场中提取纠缠
Extraction of entanglement from quantum fields with entangled particle detectors
论文作者
论文摘要
我们考虑了两个最初纠缠的unruh-dewitt粒子探测器，并检查初始纠缠与量子标量场相互作用后如何变化。由于最初未进入的检测器从田间提取纠缠，只要一开始就弱关联，纠缠探测器也会获得更多的纠缠。对于最初的足够纠缠的探测器，仅发生降解。然后，我们将分析应用于引力冲击波时期，并表明冲击波可以增强弱纠缠探测器的初始纠缠。此外，我们发现，与Minkowski时空相比，可以进行更大的检测器分离。
We consider two initially entangled Unruh-DeWitt particle detectors and examine how the initial entanglement changes after interacting with a quantum scalar field. As initially nonentangled detectors extract entanglement from the field, entangled detectors also can gain more entanglement so long as they are weakly correlated at the beginning. For initially sufficiently entangled detectors, only degradation takes place. We then apply our analysis to a gravitational shockwave spacetime and show that a shockwave could enhance the initial entanglement of weakly entangled detectors. Moreover, we find that this enhancement can occur for greater detector separations than in Minkowski spacetime.
