Presentation
Capacitance Modeling for Meander Co-Planar Waveguide Devices Used in Quantum Computers
DescriptionSeveral companies have been developing quantum computers. Co-Planar Waveguides (CPWs) couple qubits in a quantum computer and are also used to probe the quantum state in qubits. The design of meander CPW devices is an emerging area where the modeling of signal conductor's capacitance is important. Due to the complex shape of a meander CPW, a field solver is exclusively used to find the total capacitance of the signal conductor of a CPW device. In this work, we show how to model 3D capacitance in a CPW efficiently. We properly decompose the space along the path of the signal conductor into multiple regions and thus reduce the complex 3D capacitance modeling problem to a set of smaller 3D capacitance problems. Some of these smaller 3D capacitance problems (where the segment of the signal conductor is straight) are treated as 2D capacitance problems for a fixed cross section, although the shape of the cross section can vary as one moves to a next cross section. Others (where the segment of the signal conductor is a half-circle, for example) are still 3D capacitance problems. These remaining true 3D capacitance problems are further reduced into equivalent 2D capacitance problems.
Event Type
Engineering Poster
TimeWednesday, July 293:00pm - 4:00pm PDT
LocationDAC Pavilion, Exhibit Floor