Fermilab Holometer

The Fermilab Holometer, based at Fermilab in Illinois was a laser interferometer intended to be the world's most sensitive, surpassing the sensitivity of the GEO600 and LIGO systems, and theoretically able to detect holographic fluctuations in spacetime.

According to the director of the project, the Holometer should be capable of detecting fluctuations in light of a single attometer, meeting or exceeding the sensitivity required to detect the smallest units in the universe, called Planck units. Fermilab stated: "Everyone is familiar these days with the blurry and pixelated images, or noisy sound transmission, associated with poor internet bandwidth. The Holometer seeks to detect the equivalent blurriness or noise in reality itself, associated with the ultimate frequency limit imposed by nature."

In 2015 Fermilab announced that the study had found that space-time is not quantized at the scale being measured.

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