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arXiv 0909.5172cond-mat.mes-hall
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介观超导体中Majorana束缚态的电子隐形传态

Electron Teleportation via Majorana Bound States in a Mesoscopic Superconductor

Liang Fu

摘要:

超导体中的零能马约拉纳束缚态被认为是拓扑量子计算机的潜在构建块,因为量子信息可以编码在一对{ \it空间分离}马约拉纳束缚态的费米子占据中。然而,尽管密集的理论努力,非本地签名的马约拉纳绑定状态尚未发现在电荷输运。在这项工作中,我们预测了一个惊人的非局域相位相干电子转移过程凭借隧道进出一对马约拉纳束缚态。这种隐形传态现象只存在于介观超导体中,因为一个非常重要但以前被忽视的充电能量。我们提出了一个实验装置来检测超导体/量子自旋霍尔绝缘体/磁绝缘体混合系统中的这种现象。

英文摘要:

Zero-energy Majorana bound states in superconductors have been proposed to be potential building blocks of a topological quantum computer, because quantum information can be encoded in the fermion occupation of a pair of {\it spatially separated} Majorana bound states. However, despite intensive theoretical efforts, non-local signatures of Majorana bound states have not been found in charge transport. In this work, we predict a striking non-local phase-coherent electron transfer process by virtue of tunneling in and out of a pair of Majorana bound states. This teleportation phenomena only exists in a mesoscopic superconductor because of an all-important but previously over-looked charging energy. We propose an experimental setup to detect this phenomena in a superconductor/quantum spin Hall insulator/magnetic insulator hybrid system.

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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