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arXiv 1809.09050cond-mat.supr-concond-mat.mes-hall
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手征边缘涡的确定性产生和编织

Deterministic creation and braiding of chiral edge vortices

C. W. J. Beenakker, P. Baireuther, Y. Herasymenko, I. Adagideli, Lin Wang, A. R. Akhmerov

摘要:

超导体中的马约拉纳零模是位于涡旋核心或束缚在纳米线末端的中隙态。它们是具有非阿贝尔辫子统计的任意子,但当它们不动时,人们不能通过在实空间中交换它们来证明这一点,因此需要间接的方法。作为一个实空间的替代方案,我们建议使用的手征运动沿边界的超导体编织一个移动的涡旋在边缘通道与一个不动的涡旋在散装。测量方案是完全电气和确定性的:边缘涡流($π$ -相域壁)的需求,由电压脉冲在约瑟夫森结和编织与马约拉纳零模式的散装检测时,他们的融合在第二个约瑟夫森结产生的电荷。

英文摘要:

Majorana zero-modes in a superconductor are midgap states localized in the core of a vortex or bound to the end of a nanowire. They are anyons with non-Abelian braiding statistics, but when they are immobile one cannot demonstrate this by exchanging them in real space and indirect methods are needed. As a real-space alternative, we propose to use the chiral motion along the boundary of the superconductor to braid a mobile vortex in the edge channel with an immobile vortex in the bulk. The measurement scheme is fully electrical and deterministic: edge vortices ($π$-phase domain walls) are created on demand by a voltage pulse at a Josephson junction and the braiding with a Majorana zero-mode in the bulk is detected by the charge produced upon their fusion at a second Josephson junction.

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。

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