Quantum computing stocks were red-hot recently, but Jensen Huang just offered optimistic investors a reality check.

Last year, investors poured into artificial intelligence (AI) stocks, and the biggest players -- from Nvidia (NASDAQ: NVDA) to Amazon -- helped the general market soar. The S&P 500, the Dow Jones Industrial Average,

Quantum stocks like Rigetti, IonQ and D-Wave Quantum saw steep losses after Nvidia CEO Jensen Huang said quantum computers are decades away.

Addressing a question from an audience member, Huang said 15 years would probably be on the "early side" and that 30 years would likely be on

Quantum Computing didn't have any news of its own to report, but the company is even smaller than D-Wave, with less than $1 million in revenue over the last four quarters. Its stock has soared even higher than D-Wave's over the last year, a disconnect that could lead to a continued decline in Quantum Computing's shares.

Quantum computing has suddenly become a buzzword on Wall Street. Ever since Alphabet (NASDAQ: GOOG) (NASDAQ: GOOGL) reported that it hit a new milestone with Willow, its new quantum chip, quantum stocks have been soaring.