Quantum-Enhanced Advanced LIGO Detectors in the Era of Gravitational-Wave Astronomy
Quantum-Enhanced Advanced LIGO Detectors in the Era of Gravitational-Wave Astronomy
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DOI：
10.1103/physrevlett.123.231107
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发表时间：
2019-12-05
影响因子：
8.6
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Tse, M.;Yu, Haocun;Zweizig, J.
自2015年以来，激光干涉引力波天文台（LIGO）一直在直接探测来自紧凑双星合并的引力波。我们报告的第一次使用压缩真空态的引力波的直接测量与先进的LIGO H1和L1探测器。这一成就是数十年来在引力波探测器中实现压缩态研究的成果。在正在进行的O3观测运行期间，压缩态将LIGO干涉仪对50 Hz以上信号的灵敏度提高了3 dB，从而将预期检测率提高了40%（H1）和50%（L1）。
The Laser Interferometer Gravitational Wave Observatory (LIGO) has been directly detecting gravitational waves from compact binary mergers since 2015. We report on the first use of squeezed vacuum states in the direct measurement of gravitational waves with the Advanced LIGO H1 and L1 detectors. This achievement is the culmination of decades of research to implement squeezed states in gravitational-wave detectors. During the ongoing O3 observation run, squeezed states are improving the sensitivity of the LIGO interferometers to signals above 50 Hz by up to 3 dB, thereby increasing the expected detection rate by 40% (H1) and 50% (L1).