StoryFunding
PsiQuantum raises $450M Series D at a $3.15B valuation
PsiQuantum closed a $450 million Series D led by BlackRock, with Baillie Gifford, Microsoft's M12, Blackbird Ventures and Temasek, bringing total funding to $665 million at a $3.15 billion valuation. The company plans to build a 1 million-qubit photonic quantum computer using single photons on silicon chips made in standard semiconductor fabs.
- $450M Series D led by BlackRock (funds and accounts); new investors Blackbird, Temasek; existing investors Baillie Gifford, M12.
- Total funding to date: $665M; post-money valuation $3.15B.
- Building 1 million-qubit fault-tolerant quantum computer using single-photon-on-silicon approach.
- Photonic qubits encoded on circuits patterned on silicon chips using standard semiconductor manufacturing processes.