PsiQuantum is a Palo Alto-based quantum computing company developing fault-tolerant, utility-scale quantum computers using silicon photonics technology, manufacturing photonic qubits via a partnership with GlobalFoundries using standard 300mm semiconductor processes. Its flagship products include the Omega silicon photonic chipset and the Construct software platform for fault-tolerant algorithm development. The company targets industries including pharmaceuticals, finance, energy, materials science, and national security that require computational power beyond the reach of classical or AI-based systems.