Abstract
This chapter presents the main results of the LIGO Squeezed-light Injection Experiment—the sensitivity-enhancement and characterisation of the Enhanced LIGO interferometer with injected squeezed states. These results represent the first measurement of squeezing enhancement in a 4 km interferometric gravitational-wave detector, and the best high-frequency sensitivity in a gravitational-wave detector yet achieved. The investigations undertaken to characterise the squeezing injection parameters are first reported. The results of measurements of squeezing ellipse phase noise are presented in Sect. 9.1, followed by measurements made to characterise the squeezing injection detection efficiency in Sect. 9.2.
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Chua, S.S.Y. (2015). Squeezing-Enhancement of a 4 km LIGO Gravitational-Wave Detector. In: Quantum Enhancement of a 4 km Laser Interferometer Gravitational-Wave Detector. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-17686-4_9
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DOI: https://doi.org/10.1007/978-3-319-17686-4_9
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