“…Since in two dimensions the problem of quantum percolation is still discussed controversially-especially with respect to the existence of a quantum percolation threshold p c ≤ p q ≤ 1, see, e.g., Refs. 25,26,27,28,29,30,31,32,33,34,35,36-we rely on unbiased numerical techniques, which take quantum effects fully into account. To this end we employ the so-called local distribution (LD) approach 37,38 .…”