Fig. 7: Differential ribbon.
From: Surface loss calculations and design of a superconducting transmon qubit with tapered wiring
a Cross section of a differential ribbon capacitor, with metal conductors from −b to −a and a to b. The surface energies for the metal and substrate are \({U}_{r}^{m}\) and \({U}_{r}^{s}\) respectively. b Top view, showing a capacitor of length ℓ and differentially driven by ±V/2. The gray bar shows typical location of the junction wires. The x-direction is horizontal and the shaded region corresponds to the substrate.
