The Einstein–Podolsky–Rosen type of quantum entanglement can be used to improve the sensitivity of laser interferometer gravitational-wave detectors beyond the quantum limit.
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Flaminio, R. Entanglement at work. Nature Phys 13, 723–724 (2017). https://doi.org/10.1038/nphys4152
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DOI: https://doi.org/10.1038/nphys4152
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