The main LIGO and VIRGO gravitational wave detectors are now using squeezed light to get improved sensitivity to gravitational waves: https://www.nature.com/articles/d41586-019-01064-2?fbclid=IwAR2vF2wYVVjAk-V5ha4Nr6ObRfiR5OsyJATPfcNjirm5Qm3KkN8zQiF9pxI … LIGO continues to be one of humanity's most astonishing achievements. (via @preskill )
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