Decoherence of Anyonic Charge in Interferometry Measurements
Quantum Physics
2009-09-21 v2 Mesoscale and Nanoscale Physics
High Energy Physics - Theory
Abstract
We examine interferometric measurements of the topological charge of (non-Abelian) anyons. The target's topological charge is measured from its effect on the interference of probe particles sent through the interferometer. We find that superpositions of distinct anyonic charges a and a' in the target decohere (exponentially in the number of probes particles used) when the probes have nontrivial monodromy with the charges that may be fused with a to give a'.
Keywords
Cite
@article{arxiv.quant-ph/0608119,
title = {Decoherence of Anyonic Charge in Interferometry Measurements},
author = {Parsa Bonderson and Kirill Shtengel and J. K. Slingerland},
journal= {arXiv preprint arXiv:quant-ph/0608119},
year = {2009}
}
Comments
5 pages, 1 figure; v2: reference added, example added, clarifying changes made to conform to the version published in PRL