PsiQuantum

PsiQuantum is an American quantum computing company focused on building utility-scale, fault-tolerant quantum computers. Its approach centres on a silicon photonics platform, a strategy designed to leverage existing semiconductor manufacturing infrastructure to achieve scale.

The company's technical work spans several domains, including silicon photonics, quantum computing, semiconductor manufacturing, superconducting single-photon detectors, single-photon sources, and high-performance optical switches. Its key product, the Omega chipset, integrates these components into a single ultra-low-loss silicon nitride platform, manufactured at scale in a commercial foundry.

By targeting a photonics-based architecture produced through conventional semiconductor foundry processes, PsiQuantum aims to sidestep some of the engineering barriers faced by other quantum computing approaches, which often require highly specialised fabrication techniques.