Honest question: what kind of noise are we talking about? If the human eye is only sensitive to a very narrow set of wavelengths, and we remove all of those wavelengths from the environment so it has nothing to detect, then why would there be any noise in the measurement?

[–] Krudler@lemmy.world 3 points 1 week ago* (last edited 1 week ago)

I think they are referring to innate noise present in the humans. We are electro-chemical beings so there is innate "noise" within our own perceptive systems.

[–] AliasAKA@lemmy.world 2 points 1 week ago

I’m not sure. Either they’re unable to completely remove all noise (meaning the rest wasn’t done in absolute 0 photon space, only that when we pulse a photon a person can detect that there was a photon in an otherwise very low photon environment; that is, there may be some 10s of photons, but when the researchers release their control photon from the crystal, it is perceptible above that background), or perhaps they’re talking about neurological noise in the biological circuits that fire. My guess is the former.