Coulomb-assisted braiding of Majorana fermions in a Josephson junction array

@article{Heck2012CoulombassistedBO,
  title={Coulomb-assisted braiding of Majorana fermions in a Josephson junction array},
  author={Bernard van Heck and A. Akhmerov and Fabian Hassler and M.Burrello and C. W. J. Beenakker},
  journal={New Journal of Physics},
  year={2012},
  volume={14},
  pages={035019}
}
We show how to exchange (braid) Majorana fermions in a network of superconducting nanowires by control over Coulomb interactions rather than tunneling. Even though Majorana fermions are charge-neutral quasiparticles (equal to their own antiparticle), they have an effective long-range interaction through the even–odd electron number dependence of the superconducting ground state. The flux through a split Josephson junction controls this interaction via the ratio of Josephson and charging… 
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