Quantum limits of interferometer topologies for gravitational radiation detection
Quantum limits of interferometer topologies for gravitational radiation detection
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DOI：
10.1088/0264-9381/31/16/165010
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发表时间：
2013-05
影响因子：
3.5
通讯作者：
H. Miao;Huan Yang;R. Adhikari;Yanbei Chen
中科院分区：
文献类型：
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作者：
H. Miao;Huan Yang;R. Adhikari;Yanbei Chen
为了扩展引力波探测器的天体物理学范围，过去已经提出了几种干涉仪拓扑结构，以避免未来探测器的热力学和量子力学限制。在这项工作中，我们通过考虑它们的敏感性和复杂性，对这些拓扑结构进行了系统的比较。我们通过引入一个成本函数来优化它们的灵敏度，该成本函数试图最大化当前检测器灵敏度的宽带改进。我们发现，频率相关的压缩光注入与100米规模的滤波腔产生了良好的宽带灵敏度，具有低复杂性，对光损耗和良好的鲁棒性。该研究为提高未来GW探测器性能的近期实验研究计划提供了指导。
In order to expand the astrophysical reach of gravitational wave (GW) detectors, several interferometer topologies have been proposed, in the past, to evade the thermodynamic and quantum mechanical limits in future detectors. In this work, we make a systematic comparison among these topologies by considering their sensitivities and complexities. We numerically optimize their sensitivities by introducing a cost function that tries to maximize the broadband improvement over the sensitivity of current detectors. We find that frequency-dependent squeezed-light injection with a 100 m scale filter cavity yields a good broadband sensitivity, with low complexity, and good robustness against optical loss. This study gives us a guideline for the near-term experimental research programs in enhancing the performance of future GW detectors.