PsiQuantum
$7Bpaper valuation
// OVERVIEW
PsiQuantum spent a decade promising a million-qubit fault-tolerant quantum computer would arrive before anyone else's, raised $1.3 billion to build it in silence, and has yet to demonstrate a single working qubit publicly. The company is named after the quantum phenomenon of photonic states but operates under the business model of classified defense contracting — bet everything on secrecy, ship nothing until it's perfect, and hope the market waits.
// HQ
Palo Alto, United States
// STATUS
PRIVATE
// FOUNDED
2015
// TIER
The Unicorn Herd · $1B – $9.9B
// PRIMARY SECTOR
deep tech
// FOUNDERS
// FUNDING ROUNDS
// SECTORS SERVED
// TECHNOLOGY
PsiQuantum uses photonic qubits instead of the superconducting or trapped-ion approaches most competitors pursue — manipulating single photons through silicon photonics chips manufactured at GlobalFoundries' existing semiconductor fabs. The architecture requires cryogenic cooling and fault-tolerant error correction across a million-qubit system to achieve computational advantage, which is why the company has never demonstrated a working prototype — it believes the intermediate milestones competitors celebrate are scientifically meaningless.
// WOWLS ASSESSMENT
IBM demonstrated a 1,121-qubit superconducting quantum processor in 2023. Google achieved quantum supremacy in 2019 and error correction milestones in 2024. IonQ operates commercial trapped-ion systems today. PsiQuantum has published zero peer-reviewed demonstrations of a working photonic qubit despite raising more capital than any quantum computing startup in history. The $665 million Australian government partnership announced in 2024 validates the architecture's manufacturing feasibility but does not resolve the core technical question — whether photonic qubits can achieve the error rates and scalability required for fault tolerance, which remains unproven outside classified simulations. The company is either building the first commercially viable quantum computer in secret or burning a billion dollars on an approach that looked elegant in theory and impossible in practice.
// WHY WOWLS HUNTS THIS
If photonic quantum computing works PsiQuantum becomes a defense infrastructure monopoly worth $100 billion. If it doesn't work the company is the most expensive physics experiment venture capital ever funded — and WOWLS bets on the latter until someone sees a working qubit.
// VALUATION NOTE
The $7B valuation appears to be based on secondary market speculation rather than a confirmed primary funding round — most recent confirmed round was $620M in 2024 at undisclosed valuation.
VERDICT: VAPORWARE ASCENDANT — PSIQUANTUM RAISED $1.3 BILLION TO BUILD A MILLION-QUBIT PHOTONIC QUANTUM COMPUTER AND HAS YET TO DEMONSTRATE A SINGLE QUBIT WORKS OUTSIDE POWERPOINT
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// LOADING INTEL…
// BROADCAST INTEL
// SIMILAR TARGETS
// INTEL UPDATED: MAY 2026
// INTELLIGENCE DISCLAIMER: Assessments represent editorial opinion based on publicly available data including filings, press reports, and market data as of the date shown. Valuations are approximate. Not financial or investment advice.
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