Flux-biased loops including one or more Josephson junctions are ubiquitous elements in
quantum information experiments based on superconducting circuits. These quantum …

Circuit quantization is an extraordinarily successful theory that describes the behavior of
quantum circuits with high precision. The most widely used approach of circuit quantization …

The Gottesman-Kitaev-Preskill (GKP) code may be used to overcome noise in continuous
variable quantum systems. However, preparing GKP states remains experimentally …

The Quantum Instrumentation Control Kit (QICK) is a standalone open-source qubit
controller that was first introduced in 2022. In this follow-up work, we present recent …

We explore superconducting quantum circuits where several leads are simultaneously
connected beyond the tunneling regime, such that the fermionic structure of Andreev bound …

Qubit decoherence unavoidably degrades the fidelity of quantum logic gates. Accordingly,
realizing gates that are as fast as possible is a guiding principle for qubit control …

During the last 30 years, stimulated by the quest to build superconducting quantum
processors, a theory of quantum electrical circuits has emerged and this theory goes under …

In lumped-element electrical circuit theory, the problem of solving Maxwell's equations in the
presence of media is reduced to two sets of equations, the constitutive equations …

Today's mechanical sensors are capable of detecting extremely weak perturbations while
operating near the standard quantum limit. However, further improvements can be made in …

Much attention has focused on the transmon architecture for large-scale superconducting
quantum devices; however, the fluxonium qubit has emerged as a possible successor. With …