TechnologyWith an investment of AU$1 billion, PsiQuantum is planning to build a photonic quantum computer with a million qubits, far larger than any in existence today - and the firm says it will be ready in just two years 11 February 2025 A PsiQuantum silicon wafer containing thousands of quantum devicesPsiQuantumOn a large table in front of me is some of the worlds most advanced photonic hardware, which may soon drive one of the great technological revolutions of our time. I can see tiny microchips that look like precious jewels, with nanoscale patterns that make them glow like rainbows, along with detectors, filters and switches connected by fibre-optic cables, laid out on smartphone-sized circuit boards. These are the fundamental components of a massive photonic quantum computer that could be up and running in just a few years though to