Loss study of InAs-2DEG gatemons and their coplanar-waveguide resonators, showing how hybrid-material and resonator losses can dominate an otherwise scalable planar process.

Key Results

  • Coherent Rabi oscillations and vacuum Rabi splitting in an InAs-2DEG gatemon.
  • across a 1.5 GHz gate-tunable band in the reported process.
  • Systematic resonator measurements identified concrete materials and fabrication directions for improving coherence.