PsiQuantum

PsiQuantum is a quantum computing company based in Palo Alto, California, focused on building the world’s first utility-scale, fault-tolerant quantum computers. Founded in 2016 by Jeremy O'Brien, Terry Rudolph, Peter Shadbolt, and Mark Thompson, the company uses a photonics-based architecture, where photons serve as qubits, to enable scalability and long-term stability in quantum systems.

A cornerstone of PsiQuantum’s approach is the Omega chipset, a manufacturable quantum computing platform built using standard semiconductor fabrication techniques. This chipset integrates high-performance single-photon sources, superconducting detectors, and advanced optical switching components. Its design allows for scalable chip-to-chip interconnects and high-fidelity quantum operations.

PsiQuantum maintains strategic collaborations with government bodies and research institutions, including the U.S. Air Force Research Laboratory. In 2024, the Australian Commonwealth and Queensland governments announced support for the construction of a utility-scale quantum computer in Brisbane, aiming for operational readiness by 2027.

The company is also advancing research into fault-tolerant quantum computation protocols, particularly fusion-based quantum computation (FBQC), which improves error correction and system resilience. PsiQuantum’s broader mission is to address complex computational problems in areas such as chemistry, materials science, optimization, and cryptography—domains where classical computing faces limitations.

Keywords: PsiQuantum, quantum computing, photonic qubits, Omega chipset, fault-tolerant computing, FBQC, utility-scale quantum computer, Palo Alto, Brisbane project, semiconductor-based quantum systems