Trapped ions are among the most promising systems for practical quantum computing (QC).
The basic requirements for universal QC have all been demonstrated with ions, and …

Advances in materials science and engineering have played a central role in the
development of classical computers and will undoubtedly be critical in propelling the …

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 ambition of harnessing the quantum for computation is at odds with the fundamental
phenomenon of decoherence. The purpose of quantum error correction (QEC) is to …

The simulation of fermionic systems is among the most anticipated applications of quantum
computing. We performed several quantum simulations of chemistry with up to one dozen …

Here we report a breakthrough in the fabrication of a long lifetime transmon qubit. We use
tantalum films as the base superconductor. By using a dry etching process, we obtained …

The superconducting transmon qubit is a leading platform for quantum computing and
quantum science. Building large, useful quantum systems based on transmon qubits will …

High-fidelity two-qubit gates at scale are a key requirement to realize the full promise of
quantum computation and simulation. The advent and use of coupler elements to tunably …

Realizing the potential of quantum computing will require achieving sufficiently low logical
error rates. Many applications call for error rates in the $10^{-15} $ regime, but state-of-the …

Full manipulation of a quantum system requires controlled evolution generated by nonlinear
interactions, which is coherent when the rate of nonlinearity is large compared with the rate …