Quantum Manipulation of Valleys in Bilayer Graphene: Theory and Applications

TL;DR

This paper explores theoretical mechanisms for controlling valley states in bilayer graphene, proposing quantum devices like valley qubits and FETs for potential quantum and classical information processing.

Contribution

It introduces an effective Schrödinger model and identifies two key mechanisms for valley manipulation in bilayer graphene, advancing valleytronics technology.

Findings

Identified band structure warping as a valley manipulation mechanism

Proposed valley qubits and FETs based on bilayer graphene

Established theoretical foundation for valley-based quantum devices

Abstract

Quantum manipulation of valleys in bilayer graphene is investigated. We establish an effective Schrodinger model, and identify two key mechanisms for valley manipulation - band structure warping and generalized valley-orbit interaction. Specifically, we implement valley qubits / FETs in bilayer graphene, as prospective quantum devices to build valley-based quantum / classical information processing.