… state-of-the-art qubits and processors. In this Review, the major sources of decoherence in
superconducting qubits are identified through an exploration of seminal qubit and resonator …

… coherence measurements of a superconducting qubit whose design is a hybrid of several
existing types. Excellent coherence … currently reported for superconducting qubits. While the …

… high-fidelity, two-qubit gates as well as operations on logical qubits in extensible superconducting
qubit … of the recent experimental advances in qubit hardware, gate implementations, …

… standard processing techniques for high-coherence, superconducting qubits. These junctions
… Most significantly, this work demonstrates that it is possible to achieve high coherence with …

… The limited coherence of physical qubits slows down the implementation of useful … a
superconducting qubit of the less explored fluxonium type [14], the uncorrected (Ramsey) coherence …

… severe penalty on qubit coherence, as evidenced by the low coherence time of the qubits in
the D-… have not yet demonstrated compatibility with high-coherence superconducting qubits. …

… Consequently, most qubit … Superconducting qubits feature good coherence times in the
range of 10 – 300 μ s ⁠, 9–12 which is long enough for several hundred to thousand qubit gates. …

… in superconducting qubits as a representative example that demonstrates the feasibility of
coherent … of the properties of the superconducting qubit systems suitable for our purposes. …

… We report a superconducting artificial atom with a coherence … of a single Josephson junction
transmon qubit on a sapphire … qubit transition. We attribute the factor of four increase in the …

… Therefore, a low-error-rate, easy-to-scale two-qubit gate scheme is highly desirable. … qubit
gate scheme that exploits fixed-frequency qubits and a tunable coupler in a superconducting …