论文标题
杂差读数的量子挤压方案
Quantum Squeezing Schemes for Heterodyne Readout
论文作者
论文摘要
高级重力波检测器受其最敏感的频带中的量子噪声的限制。量子噪声抑制技术，例如量子挤压状态的应用，已经在同伴读数的背景下进行了积极研究。在本文中，我们考虑了杂化读数的量子挤压方案。这是由于高级检测器中稳定的回收腔成功抑制高阶模式含量的动机。杂化读数方案需要精确调整干涉仪参数和宽带挤压来源，但在概念上是简单而优雅的。我们进一步表明，它与频率依赖性挤压兼容，这既减少了射击噪声和辐射压力噪声。我们提出了一项对高级里戈挤压的杂化读数的测试。这不仅可以作为未来探测器的实现（例如爱因斯坦望远镜和宇宙探索者）的探路者，而且还可以作为一般的高精度光学测量值。
Advanced gravitational-wave detectors are limited by quantum noise in their most sensitive frequency band. Quantum noise suppression techniques, such as the application of the quantum squeezed state of light, have been actively studied in the context of homodyne readouts. In this paper, we consider quantum squeezing schemes for the heterodyne readouts. This is motivated by a successful suppression of the higher-order-mode content by stable recycling cavities in advanced detectors. The heterodyne readout scheme requires precise tuning of the interferometer parameters and a broadband squeezing source, but is conceptually simple and elegant. We further show that it is compatible with the frequency-dependent squeezing, which reduces both the shot noise and the radiation-pressure noise. We propose a test of the heterodyne readout with squeezing in Advanced LIGO. This can serve as a pathfinder not only for the implementation in future detectors, such as Einstein Telescope and Cosmic Explorer, but also for general high-precision optical measurements.
