Data repository for: Dynamical polarization of the fermion parity in a nanowire Josephson junction

  • J.J. Wesdorp (Creator)
  • L. Grünhaupt (Kavli institute of nanoscience Delft) (Creator)
  • A. Vaartjes (Kavli institute of nanoscience Delft) (Creator)
  • Marta Pita-Vidal (Creator)
  • A. Bargerbos (Kavli institute of nanoscience Delft) (Creator)
  • L.J. Splitthoff (Creator)
  • P. Krogstrup (Creator)
  • Bernard van Heck (Microsoft Quantum Lab Delft) (Creator)
  • G. de Lange (Creator)



Data repository for Dynamical polarization of the fermion parity in a nanowire Josephson junction. Josephson junctions in InAs nanowires proximitized with an Al shell can host gate-tunable Andreev bound states. Depending on the bound state occupation, the fermion parity of the junction can be even or odd. Coherent control of Andreev bound states has recently been achieved within each parity sector, but it is impeded by incoherent parity switches due to excess quasiparticles in the superconducting environment. Here, we show that we can polarize the fermion parity dynamically using microwave pulses by embedding the junction in a superconducting LC resonator. We demonstrate polarization up to 94% ± 1% (89% ± 1%) for the even (odd) parity as verified by single shot parity-readout. Finally, we apply this scheme to probe the flux-dependent transition spectrum of the even or odd parity sector selectively, without any post-processing or heralding.

Bibliographical note

contributor: NWO-I, Institutes Organisation of NWO
Date made available14 Mar 2022
PublisherTU Delft - 4TU.ResearchData
Date of data production2022 -

Cite this