Quantum computers could be used to solve complex problems that would be unfeasible for the most powerful conventional computer. But building a practical quantum computer is, of course, far from easy. To start, you need a scalable qubit platform. You need to be able to control and readout the state of the qubits. You need to be able to entangle multiple qubits. And you need to be able to determine if errors have occurred and correct them. Each of these tasks comes with its own particular challenges. Nevertheless, researchers in academia and industry continue to find solutions, bringing useful machines ever closer to reality1. In this issue of Nature Electronics, we highlight some of the latest advances.
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