PsiQuantum Raises $1B: Quantum Sites Set for Brisbane, Chicago

• PsiQuantum secures $1 billion in Series E funding, reaching a $7 billion valuation.
• Funds to advance quantum computing sites, prototype systems, and GPU-QPU integration.

On September 10, 2025, PsiQuantum announced it raised $1 billion in a Series E funding round, achieving a valuation of $7 billion. The company intends to allocate these funds to the development of utility-scale, fault-tolerant quantum computers by building quantum computing sites and testing large-scale prototypes.

The funding round was backed by prominent investors, including BlackRock, Temasek, and Baillie Gifford, with new contributors such as NVentures (NVIDIA’s venture capital arm), Macquarie Capital, and the Qatar Investment Authority. This investment underscores PsiQuantum’s growing reputation in the tech industry and provides the resources needed to expand its operations globally.

With the Series E funds, PsiQuantum will initiate the construction of quantum computing sites in Brisbane, Australia, and Chicago, USA. The company also plans to deploy large-scale prototype systems to validate the integration and architecture of its quantum technology, addressing critical challenges in system design.

PsiQuantum has also partnered with NVIDIA in a strategic collaboration aimed at advancing quantum computing capabilities. This partnership will focus on integrating GPUs with QPUs to enable seamless interoperability. Such advancements are pivotal for achieving the computational throughput needed for quantum computing applications.

The company specializes in photon-based quantum technology, utilizing photonic qubits—particles of light—for data processing. This approach is particularly suited for high-scale manufacturing in semiconductors. According to co-founder and CEO Jeremy O’Brien, the Series E funding will enable PsiQuantum to construct fault-tolerant quantum machines with a million-qubit scale, positioning it at the forefront of quantum computing innovation.