PsiQuantum
PsiQuantum is a Photonic Qubits company founded in 2016 and based in Palo Alto, United States. It has raised $2.3B in total funding, most recently a Series E in 2025 at a $7B valuation.
PsiQuantum is building a fault-tolerant photonic quantum computer leveraging existing semiconductor manufacturing infrastructure. PsiQuantum partners with GlobalFoundries to manufacture photonic chips at scale. The company plans to deliver a utility-scale machine in the late 2020s.
The company raised over $1B and secured nearly $1B in government commitments from Australia and the U.S., betting on a million-qubit photonic architecture.
At a glance
Total raised
$2.3B
Headcount
501-1k
Headquarters
Palo Alto
United StatesFounded
2016
Status
Private
Latest valuation
Where PsiQuantum ranks
Top 25 Quantum Computing companies →Funding history
Total raised
$2.3B
Rounds tracked
6
Latest stage
Series E
Latest valuation
$7B
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Sep 10, 2025 | Series E | $1B | $7B | BlackRock, Temasek, Baillie Gifford |
| Apr 30, 2024 | Growth | $620M | — |
