BACKGROUND The past two decades have seen intense efforts aimed at building quantum
computing hardware with the potential to solve problems that are intractable on classical …

Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

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 …

Defects with associated electron and nuclear spins in solid-state materials have a long
history relevant to quantum information science that goes back to the first spin echo …

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

Superconducting qubits are leading candidates in the race to build a quantum computer
capable of realizing computations beyond the reach of modern supercomputers. The …

The aim of this review is to provide quantum engineers with an introductory guide to the
central concepts and challenges in the rapidly accelerating field of superconducting …

Solid-state spin systems including nitrogen-vacancy (NV) centers in diamond constitute an
increasingly favored quantum sensing platform. However, present NV ensemble devices …

Full-scale quantum computers require the integration of millions of qubits, and the potential
of using industrial semiconductor manufacturing to meet this need has driven the …

Over the last two decades, tremendous advances have been made for constructing large-
scale quantum computers. In particular, quantum computing platforms based on …