Quantum computers work by applying quantum operations, such as quantum gates, to delicate quantum states. Ideally, quantum ...

Quantum computers are shifting from lab curiosities into real machines that can already outperform classical systems on narrow tasks, and the stakes are no longer theoretical. The technology promises ...

The field of quantum computing, like qubits themselves, exists in a state of indeterminacy, with multiple companies making big claims about wildly different approaches. On Thursday, DARPA—the Defense ...

Quantum computing is an emerging field that uses the principles of quantum mechanics to perform computation. A quantum computer is a very different type of computer that uses the weird rule of quantum ...

A pullback has dampened quantum investors' hopes in early 2026, but this industry has massive long-term potential.

The breakthrough addresses concerns that powerful quantum computers could eventually crack encryption standards to leave vulnerable financial systems, government communications, health data and media.

While most investors crowd into headline stocks, the real millionaire-making opportunity may lie in overlooked infrastructure ...

One day soon, at a research lab near Santa Barbara or Seattle or a secret facility in the Chinese mountains, it will begin: the sudden unlocking of the world’s secrets. Your secrets. Cybersecurity ...

IonQ is racing to build a commercializable quantum computer, but it is burning a lot of money. The company just raised $1 billion through a stock offering. The share price is likely to struggle going ...

On May 7, 1981, influential physicist Richard Feynman gave a keynote speech at Caltech. Feynman opened his talk by politely rejecting the very notion of a keynote speech, instead saying that he had ...

Pure-play stocks IonQ, Rigetti Computing, D-Wave Quantum, and Quantum Computing Inc. have soared by as much as 545% over the trailing year. Investors have been enamored with the sizable addressable ...