Topological blockade and measurement of topological charge
Mesoscale and Nanoscale Physics
2013-02-22 v3
Abstract
The fractionally charged quasiparticles appearing in the 5/2 fractional quantum Hall plateau are predicted to have an extra non-local degree of freedom, known as topological charge. We show how this topological charge can block the tunnelling of these particles, and how such 'topological blockade' can be used to readout their topological charge. We argue that the short time scale required for this measurement is favorable for the detection of the non-Abelian anyonic statistics of the quasiparticles. We also show how topological blockade can be used to measure braiding statistics, and to couple a topological qubit with a conventional one.
Keywords
Cite
@article{arxiv.1207.0542,
title = {Topological blockade and measurement of topological charge},
author = {B. van Heck and M. Burrello and A. Yacoby and A. R. Akhmerov},
journal= {arXiv preprint arXiv:1207.0542},
year = {2013}
}
Comments
Published version: one additional paragraph (on the 331 state); Figs. 1 and 4 modified; Ref. 46 added