Inspired by recent breakthroughs with topological quantum materials,which pave the way to novel,high-efficiency,low-energy magnetoelectric devices ”1-3” and fault-tolerant quantum information processing ”4”,inter alia,topological quantum walks have emerged as an exciting topic in its own right,especially due to the theoretical and experimental simplifications this approach offers ”5-14”.Motivated by impressive progress in topological quantum walks,we provide a perspective on theoretical studies and experimental investigations of topological quantum walks focusing on current explorations of topological properties arising for single-walker quantum walks.
information processing
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B.C.S.and J.W.are supported by the National Natural Science Foundation of China NSFC with Grant No.11675164.W.Z.is supported by the Australian Research Council ARC via the Centre of Excellence in Engineered Quantum Systems EQuS project number CE110001013,and USyd-SJTU Partnership Collaboration Awards