Peter Spring

TL;DR: In this article, a coaxial circuit quantum electrodynamics architecture for superconducting circuits is presented, in which qubit and resonator are fabricated on opposing sides of a single chip, and control and readout wiring are provided by coaxial wiring running perpendicular to the chip plane.

TL;DR: In this paper, the authors use the cross-resonance interaction to implement a gate between two superconducting transmon qubits with a direct static dispersive coupling and demonstrate a practical calibration procedure for the optimization of the gate, combining continuous and repeated-gate Hamiltonian tomography with step-wise reduction of dominant two-qubit coherent errors through mapping to microwave control parameters.

TL;DR: In this paper, the authors derived simple, accurate models for the modes of enclosures that incorporate such inductive-shunt arrays and used these models to predict that cavity-mediated inter-qubit couplings and drive-line cross-talk are exponentially suppressed with distance for arbitrarily large quantum circuits housed in such enclosures, indicating the promise of this approach for quantum computing.

TL;DR: In this paper, a Josephson parametric amplifier (JPA) based on a lumped-element LC resonator was developed for single-shot readout of superconducting qubits.