Giant Shot Noise from Majorana Zero Modes in Topological Trijunctions
Giant Shot Noise from Majorana Zero Modes in Topological Trijunctions
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DOI：
10.1103/physrevlett.122.097003
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发表时间：
2019-03-08
影响因子：
8.6
通讯作者：
Martin, T.
中科院分区：
文献类型：
--
作者：
Jonckheere, T.;Rech, J.;Martin, T.
在输运测量中明确地实验识别Majorana束缚态仍然是实验上的挑战。我们证明了在三根拓扑超导导线的结合处形成的零能Majorana态直接导致了巨大的散粒噪声幅度，特别是在低电压和小接触透明度下。唯一固有的噪声限制来自于由于多次安德烈夫反射过程而引起的电流引起的消相率。
The clear-cut experimental identification of Majorana bound states in transport measurements still poses experimental challenges. We here show that the zero-energy Majorana state formed at a junction of three topological superconductor wires is directly responsible for giant shot noise amplitudes, in particular at low voltages and for small contact transparency. The only intrinsic noise limitation comes from the current-induced dephasing rate due to multiple Andreev reflection processes.