Quantum computing can become scalable through error correction, but logical error rates
only decrease with system size when physical errors are sufficiently uncorrelated. During …

The superconducting fluxonium qubit has a great potential for high-fidelity quantum gates
with its long coherence times and strong anharmonicity at the half-flux-quantum sweet spot …

Qubit coherence and gate fidelity are typically considered the two most useful metrics for
characterizing a quantum processor. An equally useful metric is interqubit connectivity as it …

Superconducting cavities have emerged as a key tool for measuring the spin states of
quantum dots. So far, however, few experiments have explored longitudinal couplings …

Superconducting circuits are at the forefront of quantum-computing technology because of
the unparalleled combination of good coherence, fast gates, and flexibility in design …

Fluxonium qubit is a promising building block for quantum information processing due to its
long coherence time and strong anharmonicity. In this paper, we realize a 60 ns direct CNOT …

The superconducting fluxonium qubit has a great potential for high-fidelity quantum gates
with its long coherence times and strong anharmonicity at the half flux quantum sweet spot …

We report entangling two-qubit experiments implemented in a novel ring resonator
architecture in 2D planar geometry. The ring resonator acts as a multi-path coupler between …

To control and measure the state of a quantum system, it must necessarily be coupled to
external degrees of freedom. This inevitably leads to spontaneous emission via the Purcell …

Understanding and suppressing sources of decoherence is a leading challenge in building
practical quantum computers. In superconducting qubits, low-frequency charge noise is a …