Figure 4
From: Quantum random walks on congested lattices and the effect of dephasing
The escape probability 
versus a varying escape boundary tb for several values of congestion 1−
for the CRW (a) and the QRW (b).
The walker evolves for 
time steps. The QRW maintains a significantly larger 
as the boundary moves away from the initial starting position than the CRW. In both cases 
goes to zero as the boundary approaches the end of the lattice.
