# PsiQuantum Secures $1 Billion Series E for Quantum Computer Development
_PsiQuantum secured $1 billion in Series E funding. Funds managed by affiliates of BlackRock led the round, with Temasek and Baillie Gifford also as lead investors. This capital will accelerate the development of fault-tolerant quantum computers and establish utility-scale computing sites._
**Published:** 2025-09-10
**Source:** https://www.startuphub.ai/ai-news/funding-round/2025/psiquantum-secures-1-billion-series-e-for-quantum-computer-development
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[PsiQuantum](https://www.psiquantum.com/news-import) secured $1 billion in Series E funding. Funds and accounts managed by affiliates of BlackRock led the round. Temasek and Baillie Gifford also served as lead investors. This capital will accelerate the development of fault-tolerant quantum computers.

The funding values PsiQuantum at $7 billion. It enables the company to establish utility-scale quantum computing sites. These locations include Brisbane and Chicago. Furthermore, PsiQuantum will deploy large-scale prototype systems.

## Advancing Quantum Technology and Partnerships

PsiQuantum focuses on photonic qubits for error correction. This approach leverages high-volume semiconductor manufacturing. The company collaborates with [NVIDIA](https://www.startuphub.ai/ai-news/ai-research/2025/nvidias-new-approach-to-teaching-ai-reasoning-for-physical-world/) on quantum algorithms and GPU-QPU integration. Their Omega chipset, manufactured at GlobalFoundries’ Fab 8, utilizes Barium Titanate (BTO).

BTO integration enables ultra-high-performance optical switches. PsiQuantum manufactures 300mm BTO wafers in California. This technology also holds potential for next-generation [AI](https://www.startuphub.ai/ai-news/funding-round/2025/paris-medtech-safeheal-raises-e10m-for-colorectal-surgery-device/) supercomputers. Moreover, the company developed a high-density cooling solution, unlike traditional cryostats.

PsiQuantum demonstrated high-fidelity quantum networking using standard telecom fiber. This capability is crucial for utility-scale [quantum computing](https://www.startuphub.ai/ai-news/funding-round/2025/phasecraft-raises-e29m-series-b-for-quantum-computing-algorithms/). The company aims to deliver commercially useful machines, differentiating its approach from IBM Quantum or Google Quantum AI.

This significant PsiQuantum funding round propels its mission to build million-qubit scale systems.
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Original analysis from [startuphub.ai](https://www.startuphub.ai), the #1 AI startup directory.