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Optical spring tracking for enhancing quantum-limited interferometers
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DOI：10.1364/OL.540195.png)
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Modern interferometers such as LIGO have achieved sensitivities limited by quantum noise, comprising radiation pressure and shot noise. To mitigate this noise, a static system is employed that minimizes the quantum noise within the measurement band. However, since gravitational wave inspiral signals are a single frequency changing over time, only noise at the chirp frequency needs to be minimized. Here we demonstrate a proof-of-principle experiment of dynamically tracking a target signal using an optical spring, resulting in an increased signal-to-noise ratio (SNR). By injecting white noise to simulate excess shot noise, we found the SNR increased by up to a factor of 40 via dynamical tracking when compared to a static configuration. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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IF:
3.3
论文数:
4.0W
被引数:
7.6W
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