Topological superconductivity in a dimerized Kitaev chain revealed by nonlocal transport

Abstract

Artificial Kitaev chains engineered from semiconducting quantum dots coupled by superconducting segments offer a promising route to realize and control Majorana bound states for topological quantum computation. We study a dimerized Kitaev chain--equivalent to a superconducting Su-Schrieffer-Heeger model--and analyze the behavior of the resulting two coupled chains. We show that interference between Majorana edge modes from each chain gives rise to observable signatures in nonlocal conductance. Additionally, we identify a parity effect in the system length that governs the coupling of edge states, supported by an analytical model. Our results provide experimentally accessible probes for Majorana hybridization in mesoscopic topological superconductors.