We investigate the protocol of entanglement harvesting, where two spacelike separated particle detectors extract quantum correlations from a quantum field. Specifically, we analyze the role of the mass of the field and the energy gap of the detectors in the protocol. Perhaps surprisingly, we find that there are regimes in which the entanglement harvested can increase with the mass of the field by decreasing the noise experienced by the detectors. Finally, we study the optimal relationship between the gap of the detectors and the other parameters of the setting that maximizes the entanglement harvested, showing that a small mass can improve the protocol even in this case.

中文翻译：

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纠缠收获：探测器间隙和场质量优化

我们研究了纠缠收获协议，其中两个类空间分离的粒子探测器从量子场中提取量子相关性。具体来说，我们分析了场质量和探测器能隙在协议中的作用。也许令人惊讶的是，我们发现在某些情况下，通过降低探测器所经历的噪声，捕获的纠缠可以随着场的质量而增加。最后，我们研究了检测器间隙与设置的其他参数之间的最佳关系，该设置使捕获的纠缠最大化，表明即使在这种情况下，小质量也可以改进协议。