arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1809.00784cond-mat.mes-hall
收藏

Majorana束缚态的量子电荷泵

Quantum charge pumping through Majorana bound states

Krashna Mohan Tripathi, Sumathi Rao, Sourin Das

摘要:

我们研究了通过耦合到多个正常引线的马约拉纳束缚态隧道的绝热电荷泵。我们表明,对于大多数的参数,这样的泵不会导致任何净泵浦电荷之间的各种引线,除非实现多连接的几何形状。我们引入一个Aharonov-Bohm环几何在交界处实现这样一个多连通几何。我们进一步表明,泵浦电荷的傅立叶变换相对于通过环插入的通量显示了一个Andreev束缚态和马约拉纳束缚态的情况之间的明显区别。因此,这样的傅立叶分析可以作为一个诊断检测的马约拉纳束缚态在建议的几何形状。

英文摘要:

We study adiabatic charge pumping through a Majorana bound state tunnel coupled to multiple normal leads. We show that for most of the parameters such a pump does not lead to any net pumped charge between the various leads unless a multiply connected geometry is implemented. We introduce an Aharonov-Bohm ring geometry at the junction to implement such a multiply connected geometry. We further show that the Fourier transform of the pumped charge with respect to flux inserted through the ring shows a clear distinction between the case of an Andreev bound state and the Majorana bound state. Hence such a Fourier analysis can serve as a diagnostic for the detection of Majorana bound states in the proposed geometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑