SAN FRANCISCO (Reuters) - Quantum computing startup PsiQuantum is raising at least $750 million at a $6 billion pre-money valuation, according to two people familiar with the matter.

BlackRock is leading the fundraising effort, one of the people said.

The Palo Alto, California-based company is constructing large-scale quantum computers in Australia and the United States.

(Max A. Cherney in San Francisco; Editing by Chris Reese)