Anyonic interferometry without anyons: how a flux qubit can read out a topological qubit

@article{Hassler2010AnyonicIW,
  title={Anyonic interferometry without anyons: how a flux qubit can read out a topological qubit},
  author={Fabian Hassler and A. Akhmerov and Chang-Yu Hou and C. W. J. Beenakker},
  journal={New Journal of Physics},
  year={2010},
  volume={12},
  pages={125002}
}
Proposals to measure non-Abelian anyons in a superconductor by quantum interference of vortices suffer from the predominantly classical dynamics of the normal core of an Abrikosov vortex. We show how to avoid this obstruction using coreless Josephson vortices, for which the quantum dynamics has been demonstrated experimentally. The interferometer is a flux qubit in a Josephson junction circuit, which can non-destructively read out a topological qubit stored in a pair of anyons—even though the… 

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