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Decoherence of anyonic charge in interferometry measurements
Parsa Bonderson1, Kirill Shtengel, J K Slingerland
1California Institute of Technology, Pasadena, California 91125, USA.
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'.
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