Owing to their strong dipole moment and long coherence times, superconducting qubits
have demonstrated remarkable success in hybrid quantum circuits. However, most qubit …

Phase slips occur across all Josephson junctions (JJs) at a rate that increases with the
impedance of the junction. In superconducting qubits composed of JJ-array superinductors …

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

Encoding quantum information in quantum states with disjoint wave-function support and
noise-insensitive energies is the key behind the idea of qubit protection. While fully …

Fast and high-fidelity qubit initialization is crucial for low-frequency qubits such as fluxonium,
and in applications of many quantum algorithms and quantum error correction codes. In a …

We explore the dynamics of qubit-state purity in the presence of transverse noise that is
anisotropically distributed in the Bloch-sphere XY plane. We perform Ramsey experiments …

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 …

By utilizing the quantum-mechanical nature of information, quantum computers can execute
algorithms that have no equivalent in classical computing. Most known quantum algorithms …