Single electron transport and possible quantum computing in 2D materials

TL;DR

This paper reviews recent theoretical and experimental advances in single electron transport and quantum computing prospects using 2D materials like graphene and TMDs, focusing on nanostructures, Josephson junctions, and topological states.

Contribution

It provides a comprehensive overview of how 2D materials can be utilized for quantum computing, highlighting recent progress and future challenges.

Findings

Charge confinement and manipulation in 2D nanostructures

Potential of 2D-based Josephson junctions for qubits

Existence of quantum spin Hall states in 1T'-TMDs

Abstract

Two-dimensional (2D) materials for their versatile band structures and strictly 2D nature have attracted considerable attention over the past decade. Graphene is a robust material for spintronics owing to its weak spin-orbit and hyperfine interactions, while monolayer 2H-transition metal dichalcogenides (TMDs) possess a Zeeman effect-like band splitting in which the spin and valley degrees of freedom are nondegenerate. Monolayer 1T'-TMDs are 2D topological insulators and are expected to host Majorana zero modes when they are placed in contact with S-wave superconductors. Single electron transport as well as the superconductor proximity effect in these materials are viable for use in both conventional quantum computing and fault-torrent topological quantum computing. In this chapter, we review a selection of theoretical and experimental studies addressing the issues mentioned above. We will focus on: (1) the confinement and manipulation of charges in nanostructures fabricated from graphene and 2H-TMDs (2) 2D materials-based Josephson junctions for possible superconducting qubits (3) the quantum spin Hall states in 1T'-TMDs and their topological properties. We aim to outline the current challenges and suggest how future work will be geared towards developing quantum computing devices in 2D materials.