论文标题

纳米线中滑翔下的零模式的微波检测

Microwave detection of gliding Majorana zero modes in nanowires

论文作者

Dmytruk, Olesia, Trif, Mircea

论文摘要

我们研究了一种在微波腔场的存在下托有滑行Majora零模式的拓扑超导纳米线。我们表明,在没有任何直接的波形重叠的情况下,腔衰减速率均取决于由Majorana零模式编码的奇偶校验及其运动。这是因为扩展的散装状态与两个主要状态重叠,促进了它们的动量分辨微波光谱,滑行作用以通过动量增强来修改干扰模式。此外,我们证明了这些非本地效应在化学势中对中度疾病具有鲁棒性,并通过分析性低能模型确认了数值计算。我们的方法为探测与纳米线中的Majorana零模式相关的探测非本地特征提供了隧道光谱的替代方法。

We study a topological superconducting nanowire that hosts gliding Majorana zero modes in the presence of a microwave cavity field. We show that the cavity decay rate depends on both the parity encoded by the Majorana zero modes and their motion, in the absence of any direct overlap of their wavefunctions. That is because the extended bulk states that overlap with both Majorana states, facilitate their momentum-resolved microwave spectroscopy, with the gliding acting as to modify the interference pattern via a momentum boost. Moreover, we demonstrate that these non-local effects are robust against moderate disorder in the chemical potential, and confirm the numerical calculations with an analytical low-energy model. Our approach offers an alternative to tunneling spectroscopy to probe non-local features associated with the Majorana zero modes in nanowires.

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