PsiQuantum
Building the future of computing
Palo Alto, United States · Founded 2016 · $1.2B raised
- Headquarters
- Palo Alto, California
- Employees
- 501–1000
- Founded
- 2016
- Business Model
- Other
- Website
- psiquantum.com
- Total Funding
- $1.2B
- Last Round
- $750.0M Series ESep 2025
- Rounds
- 4
About
PsiQuantum develops fault-tolerant quantum computers at million-qubit scale using silicon photonics and semiconductor manufacturing. Their approach leverages photonic qubits for scalability, manufacturability, and utility in industries like healthcare and beyond. Building facilities in Australia and the US to deploy the first commercially viable quantum systems.
Summary
PsiQuantum is a Quantum Computing company based in Palo Alto, United States, founded in 2016. It has raised $1.2B in total across 4 rounds, most recently a $750.0M Series E round in Sep 2025. Investors include BlackRock, Baillie Gifford and Temasek.
Tech & App Stack
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Funding History
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Sep 2025
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Series D through Series E — per-round amounts, valuations, and who invested in each round.
Investors
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