The clock speed of topological quantum computers based on Majorana zero mode (MZM)-supporting nanoscale devices is limited by the time taken for electrons to traverse the device. We employ the time-dependent Landauer-B{\"u}ttiker transport theory for current cross-lead correlations in a superconducting nanowire junction hosting MZMs. From the time-dependent quantum noise, we are able to extract traversal times for electrons crossing the system. After demonstrating a linear scaling of traversal times with nanowire length, we present a heuristic formula for the traversal times which accurately captures their behaviour. We then connect our framework to a proposed experimental verification of this discriminant between spurious and genuine MZMs utilizing time-resolved transport measurements.
@article{arxiv.2511.02085,
title = {Current cross-correlation spectroscopy of Majorana bound states},
author = {Michael Ridley and Eliahu Cohen and Christian Flindt and Riku Tuovinen},
journal= {arXiv preprint arXiv:2511.02085},
year = {2026}
}