利用高频声子囚禁声学腔探测引力波
广义相对论与量子宇宙学
2025-06-18 v3 仪器与探测器
量子物理
摘要
针对发射高频 (~Hz) 引力波 (GW) 或以某种方式贡献于随机高频引力波背景的天体及宇宙学对象，存在多种理论预测。在此，我们提出一种适用于该频段的高灵敏度新型探测器，其基于现有的低温超高品质因子石英体声波 (Bulk Acoustic Wave) 腔技术，并耦合至工作在 ~mK 下的近量子极限 SQUID 放大器。我们表明，每个模式的谱应变灵敏度可达 ，原则上可利用多个 () 模式覆盖该频率范围，这些模式的品质因子介于 之间，从而实现宽带探测。由于该系统结构紧凑且制造工艺成熟，易于扩展为阵列和分布式网络，这不仅能提高整体灵敏度，还可引入符合性分析以确保无误报探测。
引用
@article{arxiv.1410.2334,
title = {Gravitational Wave Detection with High Frequency Phonon Trapping Acoustic Cavities},
author = {Maxim Goryachev and Michael E. Tobar},
journal= {arXiv preprint arXiv:1410.2334},
year = {2025}
}
备注
Three Errors have been fixed, an errata will appear in PRD. These errors mean that modes of n = 1,3 are more sensitive than the paper originally indicated, and modes of n = 5,7 are of similar sensitivity as indicated in the paper. All other higher-order modes are significantly less sensitive than originally indicated