The VOI-Based Valleytronics

TL;DR

This paper explores the potential of VOI-based valleytronics in graphene for advanced applications like quantum computing and low-power transistors, highlighting novel device concepts and their promising capabilities.

Contribution

It introduces the concept of VOI-based valleytronics and demonstrates its potential in quantum networks and low-power electronic devices using graphene.

Findings

Valley pair qubits enable quantum networks with graphene and photons.

VOI-based FETs offer low-power operation with graphene quantum wires.

Graphene valleytronics shows promise for future electronics and quantum technologies.

Abstract

We discuss the valley-orbit interaction (VOI) and the concept of VOI based valleytronics. Potential of such valleytronics is illustrated, with graphene as an example material, in several frontier applications comprising FETs, quantum computing, and quantum communications. Two important devices are discussed as examples, namely, 1) valley pair qubits in coupled graphene quantum dots, to build quantum networks consisting of graphene and photons, and 2) valleybased FETs consisting of graphene quantum wires (channels) and armchair graphene nanoribbons (sources and drains), to build graphene-based, low-power FET circuits. This demonstration makes the VOI-based valleytronics an attractive R & D direction in the area of electronics.