Disorder and decoherence in coined quantum walks
Rong Zhang, Hao Qin, Bao Quoc Tang, Peng Xue · Chinese Physics B · 2013
This article aims to provide a review on quantum walks. Starting form a basic idea of discrete-time quantum walks, we will review the impact of disorder and decoherence on the properties of quantum walks. The evolution of the standard quantum walks is deterministic and disorder introduces randomness to the whole system and change interference pattern leading to the localization effect. Whereas, decoherence plays the role of transmitting quantum walks to classical random walks.