Pre-screening and hetero-junction tuning for topological quantum computers

A method of evaluating a semiconductor-superconductor heterojunction in a qubit register for a topological quantum computer includes: measuring a radio frequency (RF) junction admittance of the semiconductor-superconductor heterojunction to obtain mapping data; finding one or more regions of a parametric space consistent with a complete topology of the semiconductor-superconductor heterojunction by analysis of the mapping data; measuring a sub-RF conductance, including a non-local conductance of the semiconductor-superconductor heterojunction, in each of the one or more regions of the parametric space to obtain refined data; and searching for a boundary of the complete topological phase in the parametric space and a topological gap of the semiconductor-superconductor heterojunction for at least one of the one or more regions of the parametric space by analysis of the refined data. 一种评估用于拓扑量子计算机的量子位寄存器中的半导体-超导体异质结的方法包括：测量所述半导体-超导体异质结的射频(RF)结导纳，以获得映射数据；通过对所述映射数据的分析来查找与所述半导体-超导体异质结的完整拓扑相一致的参数空间的一个或多个区域；在所述参数空间的所