At the end of 2018, GEO600 set another world record.
In doing so, it made a key step towards third-generation observatories like the Einstein Telescope and Cosmic Explorer.
GEO600 reached a squeezing level of 5.7 dB, suppressing the quantum background noise by a factor of almost 2, and increasing the volume of the observable Universe by a factor of 7.
https://www.geo600.org/67701/new-squeezing-record-at-geo600
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