论文标题
用音频场探测重力波检测器
Probing squeezing for gravitational-wave detectors with an audio-band field
论文作者
论文摘要
现在，挤压真空状态用于重力波干涉探测器，增强其灵敏度，从而实现更丰富的天体物理观测。在将来观察的跑步中，检测器将使用滤波器腔，以使用频率依赖性挤压来抑制量子辐射压力噪声。干涉仪采用内部和外部空腔装饰并以复杂的新方式进行降级，必须进行研究，以实现越来越雄心勃勃的噪声目标。本文介绍了音频诊断场（ADF），以快速而准确地表征频率依赖性响应和谐振光学系统对挤压状态的瞬时扰动。该分析使音段注射能够成为见证和优化相互作用的强大工具，例如在重力波乐器中匹配的腔间模式。为了证明，我们提出了使用音频场来表征16 M原型滤波器的实验结果。
Squeezed vacuum states are now employed in gravitational-wave interferometric detectors, enhancing their sensitivity and thus enabling richer astrophysical observations. In future observing runs, the detectors will incorporate a filter cavity to suppress quantum radiation pressure noise using frequency-dependent squeezing. Interferometers employing internal and external cavities decohere and degrade squeezing in complex new ways, which must be studied to achieve increasingly ambitious noise goals. This paper introduces an audio diagnostic field (ADF) to quickly and accurately characterize the frequency-dependent response and the transient perturbations of resonant optical systems to squeezed states. This analysis enables audio field injections to become a powerful tool to witness and optimize interactions such as inter-cavity mode matching within gravitational-wave instruments. To demonstrate, we present experimental results from using the audio field to characterize a 16 m prototype filter cavity.
