The top-transmon: a hybrid superconducting qubit for parity-protected quantum computation

  title={The top-transmon: a hybrid superconducting qubit for parity-protected quantum computation},
  author={Fabian Hassler and A. Akhmerov and C. W. J. Beenakker},
  journal={New Journal of Physics},
Qubits constructed from uncoupled Majorana fermions are protected from decoherence, but to perform a quantum computation this topological protection needs to be broken. Parity-protected quantum computation breaks the protection in a minimally invasive way, by coupling directly to the fermion parity of the system—irrespective of any quasiparticle excitations. Here, we propose to use a superconducting charge qubit in a transmission line resonator (the so-called transmon) to perform parity… 

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