Qubit Zoo

Parity-Protected Superconductor-Semiconductor Qubit

1 min read

Abstract

A gate-tunable semiconductor Josephson interferometer generates a dominant cos(2φ) term near half a flux quantum, realizing a Cooper-pair-parity-protected qubit.

Key Results

  • Demonstrated a tenfold suppression of qubit relaxation when tuned into the protected regime.
  • Established the first experimental parity-protection milestone for a cos(2φ) qubit architecture.
  • Showed that nanowire-junction tunability can compensate interferometer imbalance.

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