# Coherent transport through a Majorana island in an Aharonov-Bohm interferometer

## TL;DR

This study demonstrates phase-coherent single-electron transport through a Majorana island embedded in an Aharonov-Bohm interferometer, providing evidence for electron teleportation via Majorana modes in a topological superconductor system.

## Contribution

First experimental observation of flux-periodic conductance oscillations indicating coherent electron transport through a Majorana island in an interferometer.

## Key findings

- Persistent 1e-periodic Coulomb blockade peaks at zero energy
- h/e flux period oscillations in conductance
- Evidence of electron teleportation via Majorana modes

## Abstract

Majorana zero modes are leading candidates for topological quantum computation due to non-local qubit encoding and non-abelian exchange statistics. Spatially separated Majorana modes are expected to allow phase-coherent single-electron transport through a topological superconducting island via a mechanism referred to as teleportation. Here we experimentally investigate such a system by patterning an elongated epitaxial InAs-Al island embedded in an Aharonov-Bohm interferometer. With increasing parallel magnetic field, a discrete sub-gap state in the island is lowered to zero energy yielding persistent 1e-periodic Coulomb blockade conductance peaks (e is the elementary charge). In this condition, conductance through the interferometer is observed to oscillate in a perpendicular magnetic field with a flux period of h/e (h is Planck's constant), indicating coherent transport of single electrons through the islands, a signature of electron teleportation via Majorana modes, could also be observed, suggesting additional non-Majorana mechanisms for 1e transport through these moderately short wires.