Localizing fractional quasiparticles on graphene quantum hall antidots

TL;DR

This paper demonstrates the localization of fractional quantum Hall quasiparticles on graphene antidots, measuring their charge and highlighting the potential for quantum computing applications through anyon braiding.

Contribution

It introduces a method to localize fractional quasiparticles on graphene antidots and measures their charge, advancing quantum electronics research.

Findings

Measured quasiparticle charge as approximately ± e/3

Large energy scales enable robust quasiparticle localization

Potential for realizing anyon braiding in graphene systems

Abstract

We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately $\pm e/3$ at fractional fillings of $\nu = \pm 1/3$. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.