PsiQuantum is a quantum computing company pursuing a photonic approach, using photons (particles of light) as qubits with the stated mission of building and deploying the world's first useful, utility-scale, fault-tolerant quantum computers. Rather than scaling small noisy systems incrementally, PsiQuantum is focused directly on the large-scale, error-corrected machines it believes are needed for commercially valuable applications.
The company's strategy is built on silicon photonics manufactured using existing semiconductor infrastructure, producing its quantum photonic chips (branded Omega) through GlobalFoundries facilities. PsiQuantum highlights advantages of the photonic approach: photonic qubits can be networked over standard telecom optical fiber without transduction, photons are largely unaffected by heat and electromagnetic interference, and modular packaging reduces wiring and system complexity. The company is constructing utility-scale quantum computing facilities in partnership with governments, with planned sites including Brisbane, Australia, and Chicago, Illinois, and has also released Construct, a platform to help build fault-tolerant quantum algorithms.
PsiQuantum works closely with U.S. and allied governments, including a $100 million letter of intent with the U.S. Department of Commerce under the CHIPS and Science Act, and operates research and test facilities such as a test and validation lab associated with Griffith University in Australia.
The company's positioning centers on manufacturability and a direct path to fault-tolerant, large-scale quantum computing rather than near-term noisy intermediate-scale systems.