AI 中文总结
该研究采用空间量子光学方法探究天体引力子压缩态的远场传播，发现同锥测量的运动学冲突会抑制局域量子相干性，导致全局压缩性未必能局域观测到，可测量量子信号弱于预期。
AI 中文摘要
尽管局域天体源可产生宏观引力子压缩态，但其在远场探测器处的可观测量子 signature 仍未得到解决。本研究采用空间量子光学方法探究压缩态的传播动力学，以评估局域观测者可获取的关联函数。关键在于，我们揭示了同锥测量中存在严重的运动学冲突，这会高度抑制局域量子相干性。因此，这些宏观压缩态对单个探测器而言呈现为经典热态。我们的结果表明，全局压缩性并不保证局域可观测性，可测量的量子 signature 可能远弱于根据该态整体压缩参数所预期的结果。
英文摘要
While localized astrophysical sources can generate macroscopic graviton squeezing, their observable quantum signatures at far-field detectors remain unresolved. In this work, we investigate the propagation dynamics of the squeezed states using spatial quantum optics methods to evaluate correlation functions accessible to a local observer. Crucially, we reveal a severe kinematic conflict in same-cone measurements, which highly suppresses local quantum coherence. Consequently, these macroscopically squeezed states appear classically thermal to a single detector. Our results demonstrate that global squeezing does not guarantee local observability, and the measurable quantum signatures may be significantly weaker than what would be expected from the overall squeezing parameter of the state.
