Quantum computing is taking off, but how long will it take, and which stocks should you consider? Two leaders in the space stand out as great investments today.

Rigetti Computing is at the forefront of the quantum computing industry, but the company has a speculative stock valuation.

Quantum computing was one of the hot trends of the past few months as stocks have doubled or more following Alphabet's (NASDAQ: GOOG) Willow announcement. Investors looking for any way to play the quantum computing space have pushed microcap stocks into the stratosphere.

Quantum computing stocks took a dive Wednesday after investors' perceptions about the outlook for the sector were dramatically corrected. Valuations in the nascent space had been

Rigetti Computing (RGTI) is an integrated full-stack quantum computing company that focuses on designing and developing quantum chips. It was the first company to develop a multi-chip quantum processor.

AI should serve as a key tailwind for all the Magnificent Seven stocks. Some of them could be winners in quantum computing as well, notably including Amazon, Microsoft, and Nvidia. Amazon, Nvidia, and Tesla are focusing on the robotaxi market in different ways.