Topological Corner States in Non-Unitary Coinless Discrete-Time Quantum Walks
The discrete-time quantum walk provides a versatile platform for exploring abundant topological 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 Artbook the three-dimensional photonic waveguid