In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

During the last ten years, superconducting circuits have passed from being interesting
physical devices to becoming contenders for near-future useful and scalable quantum …

The promise of quantum computers is that certain computational tasks might be executed
exponentially faster on a quantum processor than on a classical processor 1. A fundamental …

The realization of quantum error correction is an essential ingredient for reaching the full
potential of fault-tolerant universal quantum computation. Using a range of different …

Harnessing the full power of nascent quantum processors requires the efficient management
of a limited number of quantum bits with finite coherent lifetimes. Hybrid algorithms, such as …

We propose and demonstrate an architecture for fluxonium-fluxonium two-qubit gates
mediated by transmon couplers (FTF, for fluxonium-transmon-fluxonium). Relative to …

Detecting single–photon level signals—carriers of both classical and quantum information—
is particularly challenging for low-energy microwave frequency excitations. Here we …

Here we report on the production and tomography of genuinely entangled Greenberger-
Horne-Zeilinger states with up to ten qubits connecting to a bus resonator in a …

The speed of quantum gates and measurements is a decisive factor for the overall fidelity of
quantum protocols when performed on physical qubits with a finite coherence time …

The ability to detect and deal with errors when manipulating quantum systems is a
fundamental requirement for fault-tolerant quantum computing. Unlike classical bits that are …