PsiQuantum has introduced Omega, a manufacturable chipset designed for utility-scale, million-qubit quantum computers. Featured in a paper published in Nature, the chipset integrates advanced components, including high-performance single-photon sources, superconducting detectors, and low-loss optical switches, into a high-volume semiconductor manufacturing process at GlobalFoundries. Omega achieves 99.98% single-qubit state preparation fidelity, 99.5% two-photon quantum interference visibility, 99.72% chip-to-chip quantum interconnect fidelity, and 99.22% two-qubit fusion gate fidelity, setting new benchmarks for photonic quantum computing.
The chipset leverages silicon photonics and introduces new materials like Barium Titanate (BTO) for low-loss, high-speed optical switching. It eliminates the need for traditional dilution refrigerators, using a simplified, high-power cooling system that supports scalable deployment. This cooling solution, operating at 2–4° Kelvin, integrates with industrial-scale cryoplants, enabling efficient, large-scale quantum computing infrastructure.
PsiQuantum’s approach focuses on fusion-based quantum computing (FBQC), which uses single photons as qubits and integrates them into scalable systems via optical fibers. The company has demonstrated high-fidelity quantum interconnects over distances up to 250 meters, a critical step toward building large-scale, fault-tolerant quantum systems.
The company plans to break ground on Quantum Compute Centers in Brisbane, Australia, and Chicago, Illinois, later this year. These centers will house their first utility-scale quantum systems, marking a transition from research to industrial-scale quantum computing.
For more about this new chipset, visit the PsiQuantum announcement, the Nature publication, and the introduction to Omega.
February 26, 2025
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