Quantum walks with coins undergoing different quantum noisy channels
Qin Hao1, Peng Xue1, 2, †,
       

Variance versustfor the Hadamard QWs with coins undergoing dephasing channel. The strengths of the noisy channel arep2= 0.2 (blue), 0.4 (purple), 0.6 (yellow), and 0.8 (green). Solid lines are results from the analytical solutions while the points are from numerical simulations. For all cases, the initial state of the coin is.