The discrete-time quantum walk provides a versatile platform for exploring abundant topological Accessories phenomena due to its intrinsic spin-orbit coupling.In this work, we study the non-Hermitian second-order topology in a two-dimensional non-unitary coinless discrete-time quantum walk, which is realizable in the three-dimensional photonic wave

Anders Behring Breivik’s massacre on July 22, 2011 showed the danger that a well-organized Lone Wolf could cause.The methodical and calculated way with which he prepared and justified his act awoke security services the world over as to the potential menace that this form of terrorism can pose.As they revise their strategies, this article cas