Spectral response of Josephson junctions with low-energy quasiparticles

  title={Spectral response of Josephson junctions with low-energy quasiparticles},
  author={Anna Keselman and Chaitanya Murthy and Bernard van Heck and Bela Bauer},
  journal={SciPost Physics},
We study nanowire-based Josephson junctions shunted by a capacitor and take into account the presence of low-energy quasiparticle excitations. These are treated by extending conventional models used to describe superconducting qubits to include the coherent coupling between fermionic quasiparticles, in particular the Majorana zero modes that emerge in topological superconductors, and the plasma mode of the junction. Using accurate, unbiased matrix-product state techniques, we compute the energy… 
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