PsiQuantum, Corp.

PsiQuantum is an American quantum computing company based in Palo Alto, California, focused on building and deploying the world's first useful, utility-scale, and fault-tolerant quantum computers. Founded in 2016, the company's mission is to leverage silicon photonics to achieve commercially viable quantum computing, addressing complex problems intractable for classical supercomputers.

The company's core technology centers on a silicon photonics platform, which includes the Omega silicon photonic chipset and the Construct software platform for developing fault-tolerant quantum algorithms. PsiQuantum aims to provide fault-tolerant quantum capability and Quantum-as-a-Service (QaaS) to high-value business-to-business (B2B) and business-to-government (B2G) clients. Its target market segments include national labs, large pharmaceutical and materials companies, hyperscalers, and governments, with applications spanning drug discovery, personalized medicine, artificial intelligence, materials science, climate modeling, energy simulation, and cryptography.

PsiQuantum has secured significant investment, including a $1 billion Series E funding round in September 2025, which valued the company at $7 billion. The company is actively establishing utility-scale quantum computing sites, breaking ground in Moreton Bay Central, Australia, and Chicago, Illinois. In May 2026, PsiQuantum signed a Letter of Intent with the U.S. Department of Commerce for up to $100 million in incentives under the CHIPS and Science Act and made its Construct software platform freely accessible. Leadership saw a shift in February 2026 with Victor Peng appointed Interim CEO, while co-founder Jeremy O'Brien transitioned to Executive Chairman. The company's market positioning emphasizes its unique silicon photonics approach, aiming for operational utility-scale quantum computers by 2027.