Figure 2
From: Quantum random walks on congested lattices and the effect of dephasing
The variance σ2 and the escape probability 
for a CRW plotted as a function of time t for varying congestion probabilities 1−
on a two-dimensional square lattice of size tmax = 75.
(a) Reduced spreading is observed as congestion increases but the linear dependence remains. (b) The escape probability 
decreases as shown with an escape boundary of 
. The walker tends to escape linearly with time.
