论文标题
测量量子场如何影响纠缠收获
How measuring a quantum field affects entanglement harvesting
论文作者
论文摘要
我们分析了纠缠收集如何受量子场上测量的性能的影响。将场上的测量值模拟为将粒子探测器与田间的耦合，然后进行检测器上进行的投影测量。在我们的分析中，我们考虑了两个探测器收集纠缠的不同布置和用于进行测量的辅助检测器。我们发现，取决于用于测量场的探测器的初始和最终状态及其耦合强度，我们发现了对场上进行测量的方式影响收获的纠缠。我们确定了在制备纠缠收集方案期间可以测量场地的制度，而无需显着干扰收获的纠缠。我们还确定了在哪些方案中，现场测量可以降解或稍微增强粒子探测器收获纠缠的能力。
We analyzed how entanglement harvesting is affected by the performance of a measurement on the quantum field. The measurement on the field is modelled as the coupling of a particle detector to the field, followed by a projective measurement performed on the detector. In our analysis, we considered different arrangements for two detectors harvesting entanglement and an ancillary detector used to perform a measurement. We found different regimes for how performing measurements on the field affects the entanglement harvested, depending on the initial and final states of the detector used to measure the field, as well as its coupling strength. We identified the regimes where it is possible to measure the field during the preparation of entanglement harvesting protocols without significantly interfering in the entanglement harvested. We also identify in what regimes the field measurement can degrade or slightly enhance the ability of particle detectors to harvest entanglement.
