This is what's happening on Wednesday, as quantum computing investors cheer some kind words from Microsoft's strategic missions and technologies chief, Mitra Azizirad, who last night urged quantum investors to get ready, because "we are right on the cusp of seeing quantum computers solve meaningful problems and capture new business value."

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.

Canadian pension manager PSP just sold nearly 20 million shares of quantum-computing firm D-Wave. It plans to sell another 20 million.