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 information processing—which relies on spin defects or single-photon emission—
has shown quantum advantage in proof-of-principle experiments including microscopic …

The global quantum internet will require long-lived, telecommunications-band photon–
matter interfaces manufactured at scale. Preliminary quantum networks based on photon …

Atomic defects in the solid state are a key component of quantum repeater networks for long-
distance quantum communication. Recently, there has been significant interest in rare earth …

Recent developments in chip-based photonic quantum circuits have radically impacted
quantum information processing. However, it is challenging for monolithic photonic platforms …

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 …

In the past decade, semiconducting qubits have made great strides in overcoming
decoherence, improving the prospects for scalability and have become one of the leading …

Spins of impurities in solids provide a unique architecture to realize quantum technologies.
A quantum register of electron and nearby nuclear spins in the lattice encompasses high …

A central challenge in develo** quantum computers and long-range quantum networks is
the distribution of entanglement across many individually controllable qubits. Colour centres …

Electron spin resonance spectroscopy is the method of choice for characterizing
paramagnetic impurities, with applications ranging from chemistry to quantum computing …