论文标题
量子霍尔 - 珀索导体混合动力车中支持涡流的Andreev流程
Vortex-enabled Andreev processes in quantum Hall-superconductor hybrids
论文作者
论文摘要
量子霍尔 - 渗透导体异质结构为内在易受断层量子计算提供了可能的平台。由于最近成功整合了这些阶段的几项实验的动机，我们通过邻近的整数量子厅边缘调查了运输 - 特别关注涡流对超导体的影响。通过检查下游电导，我们确定了在其中介导的Andreev工艺中，否则将在无涡流设置中冻结的Andreev工艺。此外，我们表明，在有限温度和大量涡流的极限下，下游电导率可以平均为零，表明超导体有效地行为像正常接触。我们的结果强调了在使用运输测量结果研究量子霍尔 - 渗透杂种中的超导相关性时考虑涡旋的重要性。
Quantum Hall-superconductor heterostructures provide possible platforms for intrinsically fault-tolerant quantum computing. Motivated by several recent experiments that successfully integrated these phases, we investigate transport through a proximitized integer quantum Hall edge--paying particular attention to the impact of vortices in the superconductor. By examining the downstream conductance, we identify regimes in which sub-gap vortex levels mediate Andreev processes that would otherwise be frozen out in a vortex-free setup. Moreover, we show that at finite temperature, and in the limit of a large number of vortices, the downstream conductance can average to zero, indicating that the superconductor effectively behaves like a normal contact. Our results highlight the importance of considering vortices when using transport measurements to study superconducting correlations in quantum Hall-superconductor hybrids.
