Norio Konno, Quantum Studies: Mathematics and Foundations, April 2015, Volume 2, Issue 1, pp 63-76, Date: 03 Mar 2015, DOI: 10.1007/s40509-015-0035-9

**Abstract:** The discrete-time quantum walk (QW) has been extensively and intensively investigated in the last decade, whose coin operator is defined by a unitary matrix. We extend Continue reading