Electron Teleportation via Majorana Bound States in a Mesoscopic Superconductor

TL;DR

This paper predicts a non-local electron teleportation process mediated by Majorana bound states in a mesoscopic superconductor, enabled by charging energy, and proposes an experimental detection method.

Contribution

It introduces a novel non-local electron transfer mechanism via Majorana states in mesoscopic superconductors, emphasizing the role of charging energy and suggesting an experimental setup.

Findings

Prediction of non-local phase-coherent electron transfer

Identification of charging energy as a key factor

Proposal of an experimental detection scheme

Abstract

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.