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arXiv 2006.11301quant-phgr-qchep-th
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引力波对真空纠缠的影响

Gravitational waves affect vacuum entanglement

Qidong Xu, Shadi Ali Ahmad, Alexander R. H. Smith

备注：
6 + 8 pages, 6 figures
发表信息：
Phys. Rev. D 102, 065019 (2020)
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摘要：

纠缠捕获协议是一种可操作的探测真空纠缠的方法。该协议依赖于两个原子，由Unruh-DeWitt探测器建模，最初未纠缠。然后这些原子与场局部相互作用并纠缠在一起。如果原子保持类空间分离，它们之间的任何纠缠都是从场“收获”的纠缠的结果。因此，量化这种纠缠可以作为原子相互作用区域内场纠缠程度的代表。使用该协议，它表明，虽然一个单独的惯性原子的跃迁概率是不受引力波的存在下，由两个原子收获的纠缠依赖于灵敏的频率的引力波，表现出新颖的共振效应时，探测器的能隙被调谐到的频率的引力波。这表明，由引力波留下的纠缠签名可能是有用的，在表征其属性，并在探索引力波记忆效应和引力波诱导的退相干潜在有用。

英文摘要：

The entanglement harvesting protocol is an operational way to probe vacuum entanglement. This protocol relies on two atoms, modelled by Unruh-DeWitt detectors, that are initially unentangled. These atoms then interact locally with the field and become entangled. If the atoms remain spacelike separated, any entanglement between them is a result of entanglement that is `harvested' from the field. Thus, quantifying this entanglement serves as a proxy for how entangled the field is across the regions in which the atoms interacted. Using this protocol, it is demonstrated that while the transition probability of an individual inertial atom is unaffected by the presence of a gravitational wave, the entanglement harvested by two atoms depends sensitively on the frequency of the gravitational wave, exhibiting novel resonance effects when the energy gap of the detectors is tuned to the frequency of the gravitational wave. This suggests that the entanglement signature left by a gravitational wave may be useful in characterizing its properties, and potentially useful in exploring the gravitational-wave memory effect and gravitational-wave induced decoherence.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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