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Quantum-Enhanced Advanced LIGO Detectors in the Era of Gravitational-Wave Astronomy
Physical Review Letters
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 thedoi:10.1103/physrevlett.123.231107 pmid:31868462 fatcat:j7fv7bvcu5hhlolzsntnd6iukq