Integrating planar circuits with superconducting 3D microwave cavities using tunable low-loss couplers

  1. Ziyi Zhao,
  2. Eva Gurra,
  3. Eric I. Rosenthal,
  4. Leila R. Vale,
  5. Gene C. Hilton,
  6. and K. W. Lehnert
We design and test a low-loss interface between superconducting 3-dimensional microwave cavities and 2-dimensional circuits, where the coupling rate is highly tunable. This interface