论文标题

评估一维拓扑超导体中的绑定状态:Majorana与TAMM

Assessing bound states in a one-dimensional topological superconductor: Majorana versus Tamm

论文作者

Vigliotti, Lucia, Cavaliere, Fabio, Carrega, Matteo, Ziani, Niccolò Traverso

论文摘要

借助拓扑量子计算中的应用,拓扑超导体中的主要结合状态吸引了激烈的研究活动。但是,它们并不是这种系统中可能发生的拓扑结合状态的唯一例子。我们在这里研究Majorana和Tamm Bound State都竞争的模型。我们在数值和分析上都表明,令人惊讶的是,即使频谱变得无间隙,TAMM状态仍然部分定位。尽管这一事实,我们证明了Majorana两极分化显示了这两个制度之间的明显过渡。

Majorana bound states in topological superconductors have attracted intense research activity in view of applications in topological quantum computation. However, they are not the only example of topological bound states that can occur in such systems. We here study a model in which both Majorana and Tamm bound states compete. We show both numerically and analytically that, surprisingly, the Tamm state remains partially localized even when the spectrum becomes gapless. Despite this fact, we demonstrate that the Majorana polarization shows a clear transition between the two regimes.

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