Quantum computing is an early-stage technology; all of the pure-play companies in the space are high-risk investments.

And finally, shares of QCi are extremely expensive. Its stock has a price-to-sales ratio of about 4,500, making it more ...

One company that's emerged as a perceived leader in the space is IonQ ( IONQ 6.85%), which uses trapped-ion technology to ...

Quantum computing is finally heating up. There is a heady mix of high-profile and highly resourced big tech players like ...

Out of the four companies Barron’s follows, Quantum Computing is the only pure play whose shares have fallen this year. The ...

Experts warn quantum computers could someday forge Bitcoin’s digital signatures, allowing unauthorized transactions.

Explore the innovative Willow quantum chip by Google, marking a major milestone in quantum computing with 13,000× faster performance.

For years quantum technology seemed exciting in theory but not much good in practice. Now the ability to combine qubits—bits ...

“Quantum clocks running at the smallest scales were expected to lower the energy cost of timekeeping, but our new experiment ...

To be “quantum safe,” a blockchain must adopt cryptographic primitives—signatures, hashing, key encapsulation—that could ...

Microsoft on Wednesday said it is expanding its quantum facility just outside the Danish capital Copenhagen, by building its ...

D-Wave Quantum has a leg up on the competition in this still-young industry. The company's leading quantum annealing system is now commercially available. D-Wave Quantum also has a strong balance ...