Transforming stand-alone qubits into a functional, general-purpose quantum processing unit
requires an architecture where many-body quantum entanglement can be generated and …

Schrödinger cat states, quantum superpositions of macroscopically distinct classical states,
are an important resource for quantum communication, quantum metrology and quantum …

Superconducting fluxonium qubits provide a promising alternative to transmons on the path
toward large-scale superconductor-based quantum computing due to their better coherence …

Quantum computers built with superconducting artificial atoms already stretch the limits of
their classical counterparts. While the lowest energy states of these artificial atoms serve as …

Maintaining or even improving gate performance with growing numbers of parallel
controlled qubits is a vital requirement for fault-tolerant quantum computing. For …

Qubits in cavity quantum electrodynamic (QED) architectures are often operated in the
dispersive regime, in which the operating frequency of the cavity depends on the energy …

We demonstrate a controlled-Z gate between capacitively coupled fluxonium qubits with
transition frequencies 72.3 and 136.3 MHz. The gate is activated by a 61.6-ns-long pulse at …

Ternary quantum information processing in superconducting devices poses a promising
alternative to its more popular binary counterpart through larger, more connected …

The theory of circuit quantum electrodynamics has successfully analyzed superconducting
circuits on the basis of the classical Lagrangian, and the corresponding quantized …

Unwanted ZZ interaction is a quantum-mechanical crosstalk phenomenon which correlates
qubit dynamics and is ubiquitous in superconducting qubit systems. It adversely affects the …