论文标题
旋转黑洞的纠缠放大
Entanglement Amplification from Rotating Black Holes
论文作者
论文摘要
长期以来，已知量子真空的特征是时空点之间的场相关性。这些相关性可以用一对粒子探测器交换，以简单的两级量子系统（Unruh-Dewitt探测器）建模，该过程被称为纠缠收获。我们在存在旋转BTZ黑洞的情况下研究这种现象，发现旋转可以显着扩大收获的真空纠缠。共旋转检测器之间的一致是在与黑洞相对于大距离的中间距离处的数量级的扩增。该效果最为明显，对于近乎超级小质量黑洞，并允许在大间距探测器分离处收获。我们还发现，随着黑洞的角动量的增加，纠缠的阴影 - 无法提取纠缠的黑洞附近的区域。
The quantum vacuum has long been known to be characterized by field correlations between spacetime points. These correlations can be swapped with a pair of particle detectors, modelled as simple two-level quantum systems (Unruh-DeWitt detectors) via a process known as entanglement harvesting. We study this phenomenon in the presence of a rotating BTZ black hole, and find that rotation can significantly amplify the harvested vacuum entanglement. Concurrence between co-rotating detectors is amplified by as much as an order of magnitude at intermediate distances from the black hole relative to that at large distances. The effect is most pronounced for near-extremal small mass black holes, and allows for harvesting at large spacelike detector separations. We also find that the entanglement shadow -- a region near the black hole from which entanglement cannot be extracted -- is diminished in size as the black hole's angular momentum increases.
