Copper Waveguide Cavities With Reduced Surface Loss for Coupling to Superconducting Qubits
Copper Waveguide Cavities With Reduced Surface Loss for Coupling to Superconducting Qubits
Significant improvements in superconducting qubit coherence times have been achieved recently with three-dimensional microwave waveguide cavities coupled to transmon qubits. While many of the measurements in this direction have utilized superconducting aluminum cavities, other recent work has involved qubits coupled to copper cavities with coherence times approaching 0.1 ms. The …