PsiQuantum Announces Omega, a Manufacturable Photonic Quantum Computing Chipset

Insider Brief

• PsiQuantum has announced Omega, a quantum photonic chipset designed for utility-scale quantum computing, featuring high-performance photonic components manufactured at GlobalFoundries.
• The Omega chipset integrates single-photon qubits with telecom-grade silicon photonics, overcoming key scalability challenges and achieving high-fidelity quantum interconnects, essential for million-qubit systems.
• PsiQuantum is building Quantum Compute Centers in Brisbane and Chicago, backed by government partnerships, marking a transition from research to large-scale quantum system deployment.

thequantuminsider.com, Feb. 26, 2025 – 

PRESS RELEASE – PsiQuantum today announces Omega, a quantum photonic chipset purpose-built for utility-scale quantum computing. Featured in a newly published paper in Nature, the chipset contains all the advanced components required to build million-qubit-scale quantum computers and deliver on the profoundly world-changing promise of this technology. Every photonic component is demonstrated with beyond-state-of-the-art performance. The paper shows high-fidelity qubit operations, and a simple, long-range chip-to-chip qubit interconnect – a key enabler to scale that has remained challenging for other technologies. The chips are made in a high-volume semiconductor fab, representing a new level of technical maturity and scale in a field that is often thought of as being confined to research labs. PsiQuantum will break ground this year on two datacenter-sized Quantum Compute Centers in Brisbane, Australia and Chicago, Illinois.

Designed by PsiQuantum and manufactured at GlobalFoundries in New York, the new chipset integrates these advances into high-volume, industrially-proven processes – ready for large-scale systems integration. PsiQuantum's approach is based on using single photons – particles of light – which are then manipulated using silicon photonic chip technology originally developed for telecom and datacenter networking applications. For quantum applications, the company had to improve performance well beyond the state-of-the-art, and introduced new materials into the fab, including a superconducting material used for highly efficient single-photon detection, and Barium Titanate (BTO), an advanced material for low-loss, high speed optical switching which is developed and produced by PsiQuantum in San Jose, California. The company also had to overcome challenges with background noise and low-temperature operation of the chip to demonstrate the circuit performance detailed in the paper – PsiQuantum's latest measurements include 99.98% single-qubit state preparation and measurement fidelity, 99.5% two-photon quantum interference visibility, and 99.72% chip-to-chip quantum interconnect fidelity.

PsiQuantum's founding team performed the world's first lab demonstration of a two-qubit logic gate using single photons in Brisbane, Australia over 20 years ago, invented integrated quantum photonics and 'fusion-based' quantum computing, and made a prototype quantum processor available via the cloud in 2013. Since then, the team has focused exclusively on the scaling, performance and manufacturing challenges associated with building million-qubit-scale systems essential for commercially valuable applications.

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