'Squeezed' Light May Improve Gravitational Wave Detectors

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Aerial view of the LIGO interferometer in Hanford Washington. Photo courtesy LIGO Laboratory.
Aerial view of the LIGO interferometer in Hanford, Washington. Photo courtesy LIGO Laboratory.

A research collaboration has taken steps toward improving the sensitivity of gravitational wave detectors, devices designed to measure distance changes as minute as one-thousandth the diameter of a proton. Scientists hope these detectors can one day further verify Einstein's theory of general relativity and even open a new window into the strange workings of the universe.


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