Analyst note · Photonic
PsiQuantum Photonic
Most ambitious bet in the field — utility-scale photonic FTQC with sovereign backing (US + Australia); Brisbane facility online 2027.
Most ambitious bet in the field — utility-scale photonic FTQC with sovereign backing (US + Australia); Brisbane facility online 2027.
— Ledger Desk · analyst thesis
Bull case
▲ upside$1B Series E (Sep 2025) led by BlackRock at $7B post-money — first major public-asset-manager anchor in the sector. AU$940M Australian government co-investment. $760M Illinois/DARPA Chicago package. Foundry-fabricated on GlobalFoundries silicon photonics — only company with credible million-qubit thesis. Selected for DARPA US2QC final phase. Most likely 2027 IPO candidate.
Bear case
▼ downsideBrisbane operationalization slipped from 2026 to 2027. Photonic gates are probabilistic — massive resource overhead. No working medium-scale system demonstrated yet. Burn rate to support utility-scale buildout is enormous. If FTQC slips, capital structure is exposed.
Ledger Score · PsiQuantum
The Ledger reads constructive
Strongest single technical validation in DARPA US2QC; capital-intensive million-qubit photonic bet with the deepest government backing.
Strongest single technical validation in DARPA US2QC; capital-intensive million-qubit photonic bet with the deepest government backing.
Technology
76
Capital
92
Commercial
40
Government
95
Components are independently scored and weighted. See methodology.
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A profile is a snapshot of an argument, not a verdict. The Ledger updates the score nightly; the thesis we revisit only when the facts change.
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