You might be familiar with the qubit, the fundamental unit of quantum information. As its name suggests, a qubit in a quantum computer performs the same function as a bit in a classical computer, with ...

There’s no guarantee quantum catches on once it moves beyond a research setting, UBS says. Here are four scenarios for the future.

China is racing to harden its quantum ambitions on two fronts at once, pairing more powerful quantum processors with new cryptographic tools designed to survive a future of code-breaking machines.