• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Philosophical transactions of the Royal Society. Mathematical, physical, and engineering sciences >Gravitational wave detection using laser interferometry beyond the standard quantum limit
【24h】

Gravitational wave detection using laser interferometry beyond the standard quantum limit

机译：使用激光干涉测量法超出标准量子极限的引力波检测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Interferometric gravitational wave detectors (such as advanced LIGO) employ high-power solidstate lasers to maximize their detection sensitivity and hence their reach into the universe. These sophisticated light sources are ultra-stabilized with regard to output power, emission frequency and beam geometry; this is crucial to obtain low detector noise. However, even when all laser noise is reduced as far as technically possible, unavoidable quantum noise of the laser still remains. This is a consequence of the Heisenberg Uncertainty Principle, the basis of quantum mechanics: in this case, it is fundamentally impossible to simultaneously reduce both the phase noise and the amplitude noise of a laser to arbitrarily low levels. This fact manifests in the detector noise budget as two distinct noise sources-photon shot noise and quantum radiation pressure noise-which together form a lower boundary for current-day gravitational wave detector sensitivities, the standard quantum limit of interferometry. To overcome this limit, various techniques are being proposed, among them different uses of non-classical light and alternative interferometer topologies. This article explains how quantum noise enters and manifests in an interferometric gravitational wave detector, and gives an overview of some of the schemes proposed to overcome this seemingly fundamental limitation, all aimed at the goal of higher gravitational wave event detection rates.
机译：干涉式重力波检测器（如先进的Ligo）采用大功率固体激光器，以最大化其检测灵敏度，从而使其进入宇宙。这些复杂的光源在输出功率，发射频率和梁几何方面是超稳定的;这对于获得低探测器噪声至关重要。然而，即使在从技术上可能降低了所有激光噪声时，激光器的不可避免的量子噪声仍然存在。这是Heisenberg不确定原理的结果，量子力学的基础：在这种情况下，从而来，同时不可能减少激光的相位噪声和振幅噪声，以任意低级。该事实表现在探测器噪声预算中，作为两个不同的噪声源 - 光子射击噪声和量子辐射压力噪声 - 它们在一起为当今的重力波检测器敏感性的较低边界，是干涉测量的标准量子限制。为了克服这种限制，提出了各种技术，其中包括非古典光和替代干涉仪拓扑的不同用途。本文说明了如何在干涉测量重力波检测器中进入和体现，并概述了提出的一些方案，以克服这种看似基本的限制，所有这些方案都针对更高的引力波事件检测率的目标。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号