Quantum computing's real-world benefits are still likely years away, but these companies are preparing for the future now.

Researchers, some publicly traded companies, and many investors are betting that quantum computing could be the next big tech wave. But we're still in the early innings, which makes pure-play quantum computing stocks like IonQ and D-Wave Quantum largely speculative bets. Some estimates suggest practical use cases may still be many years away.

That said, investors don't need to wait. Leading technology companies already benefit from massive trends like artificial intelligence -- and they're shaping up to be key quantum computing players as well. Here are three of the best.

1. Nvidia

Nvidia ( NVDA -0.52% ) is already a well-known semiconductor leader ,

See Full Page