Want to know two important words for potentially making a lot of money as an investor? Here they are: big and early. The first word refers to finding an area that could become a big opportunity. The second word is about getting in early on that opportunity.

I think quantum computing clears the hurdle of having big growth potential. The technology could revolutionize artificial intelligence (AI), cryptography, drug discovery, and more. It's also a space where you can still get in early. And there are three quantum computing stocks, in particular, that could make you a millionaire.

1. IonQ

If I had to pick only one quantum computing stock that could make you a millionaire, it would probably be IonQ ( IONQ 6.46% ) . The company, founded in 2005, has already achieved tremendous s

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