Towards searching for Majorana fermions in topological insulator nanowires

TL;DR

This paper proposes using topological insulator nanowire-based supercurrent transistors as a promising platform for controlling supercurrents and probing Majorana states, advancing quantum information technology.

Contribution

It introduces a novel nano-hybrid supercurrent transistor design using topological insulator nanowires for topological quantum applications.

Findings

Design of a gate-tunable supercurrent transistor using topological insulator nanowires

Potential for probing Majorana states in topological insulator nanowires

Establishment of a platform for topological supercurrent qubits

Abstract

Developing a gate-tunable, scalable, and topologically-protectable supercurrent qubit and integrating it into a quantum circuit are crucial for applications in the fields of quantum information technology and topological phenomena. Here we propose that the nano-hybrid supercurrent transistors, a superconducting quantum analogue of a transistor, made of topological insulator nanowire would be a promising platform for unprecedented control of both the supercurrent magnitude and the current-phase relation by applying a voltage on a gate electrode. We believe that our experimental design will help probing Majorana state in topological insulator nanowire and establishing a solid-state platform for topological supercurrent qubit.