Part 3/12:
Among these, Quantum Motion from the UK stands out with claims of having developed a "full stack" scalable quantum computer—meaning they possess hardware, software, and a user interface together. They utilize superconducting circuits and boast the potential to scale up to one million qubits, a milestone often associated with actual useful deployment. Similar claims arise from companies like PsiQuantum, working with photons as qubits, and Chinese tech giants, who are building factories to mass produce quantum computers. Fujitsu from Japan even announced a quantum computer with 250 logical qubits. These announcements have generated excitement and marketing narratives about an imminent quantum revolution.