Testing randomness using multi-photon interference
Jonathan C. F. Matthews, Rebecca Whittaker, Jeremy L. O’Brien, Peter S. Turner · 2014
We demonstrate pseudorandom optical processes known as t-designs, showing that for t = 1(2) they are statistically indistinguishable from random operations for 1(2)-photon quantum interference, and that they fail to mimic randomness for 2(3)-photon interference.