标题： 操控马约纳那费米子的拓扑自旋 显示英文标题

标题： Manipulating the topological spin of Majoranas

摘要： 非阿贝尔任意子的交换统计性质使马约拉纳零模式对于技术应用和基础研究都具有吸引力。与它们的非阿贝尔对应物不同，阿贝尔贡献$e^{i \theta}$，其中$\theta$直接与马约拉纳拓扑自旋相关，通常被忽略。然而，阿贝尔交换相位和因此的拓扑自旋可以从一个系统到另一个系统不同。对于拓扑超导体中的涡旋，阿贝尔交换相位被解释为由涡旋环绕一个$e/4$电荷而产生的阿哈罗诺夫-卡舍相位。在这项工作中，我们展示了如何操控这种分数电荷和因此的拓扑自旋，为拓扑量子计算中的编织操作引入了一个额外的控制手段。为了探测这一效应，我们提出了一种涡旋干涉实验，通过临界电流的可测量变化来揭示这种分数电荷的影响。 显示英文摘要

摘要： The non-Abelian exchange statistics of Majorana zero modes make them interesting for both technological applications and fundamental research. Unlike their non-Abelian counterpart, the Abelian contribution $e^{i \theta}$, where $\theta$ is directly related to the Majorana's topological spin, is often neglected. However, the Abelian exchange phase and hence the topological spin can differ from system to system. For vortices in topological superconductors, the Abelian exchange phase is interpreted as an Aharonov-Casher phase arising from a vortex encircling an $e/4$ charge. In this work, we show how this fractional charge and hence the topological spin can be manipulated, introducing an additional knob for braiding operations in topological quantum computing. To probe this effect, we propose a vortex interference experiment that reveals the effect of this fractional charge through measurable shifts in the critical current.