Abstract: This work deals with percolation in coined quantum walks. We use the model
of percolation known from classical physics as an example of disturbance in
quantum walks.�
After some introduction to the percolation process we summarize some
published results mainly about spreading of a quantum walk on an infinite
percolated graph.
In the second part we utilise findings about random unitary operators for
finding the long-term behaviour of percolated quantum walks on finite
graphs. The main part of this work is finding possible asymptotic states for
partially percolated quantum walk on two particular finite graphs.
