2021/06/11 by Lin Zhang, Chao Wang, Zhang, Lin +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optical and Acousto-Optic Technologies #Photonic and Optical Devices #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2106.06146
openalex publication_date 2021/06/11 · openalex created_date 2021/06/22 · openalex updated_date 2026/07/28
At the domain wall between two regions with the opposite Chern number, there should be the one-dimensional chiral states, which are called as the kink states. The kink states are robust for the lattice deformations. We design a multi-terminal device with the kink states to study the local Andreev reflection and the crossed Andreev reflection. The coefficient of the crossed Andreev reflection can reach 1 in the four-terminal device. Besides adjusting the phase difference between superconductors, the local Andreev reflection and the crossed Andreev reflection can be controlled by changing the on-site energy and the stagger energy in the four-terminal device. Our results give some new ideas to design the quantum device in the future.