blog posts Experiment shows people can detect flashes of light as feeble as a single photon Jul 20, 2016 1:00 pm by Scientific AmericanIllinois in the News Share on Facebook Tweet Email Images Scientific American (July 19) The study “finally answers a long-standing question about whether humans can see single photons – they can!” says Paul Kwiat, a quantum optics researcher at Illinois. Share on Facebook Tweet Email