Southwest Quantum Information and Technology

Tunable Couplers For Superconducting Qubits

Presenting Author: Nicholas Materise, Colorado School of Mines
Contributing Author(s): Mathieu, Dartiailh, Eliot Kapit, Javad Shabani

The integration of parametric tunable couplers in superconducting qubits has enabled myriad demonstrations of quantum advantage in existing planar architectures. Recent progress in semiconductor-superconductor integration promises alternative tuning modalities capable of replacing existing flux tuning schemes. We present an outline for a gate-tunable, voltage controlled coupler realized with a two-dimensional electron gas in an III-V semiconductor heterostructure. We give an estimate of the on/off ratio and dielectric-limited loss from the inclusion of the 2D coupler in a two qubit system.

(Session 5 : Thursday from 12:00pm-2:00 pm)