The DiVincenzo criteria are a checklist for building a quantum computer, set out by physicist David DiVincenzo in 2000. They define what any candidate hardware platform must be able to do, and they are still used to assess and compare the many approaches to quantum computing being pursued today.
There are five core criteria: a scalable physical system with well-characterised qubits; the ability to initialise the qubits into a known starting state; coherence times long enough to perform many operations before information is lost; a universal set of quantum gates; and the ability to measure individual qubits reliably. Two further criteria address quantum communication: the ability to interconvert stationary and flying qubits, and to transmit qubits between locations.
Silicon spin qubits perform strongly against these criteria, and scalability is where this approach is most distinctive. Because the qubits are made with CMOS manufacturing, the first criterion, a scalable physical system, aligns naturally with an industry already capable of producing billions of transistors per chip. Meeting every criterion together, at scale and with high gate fidelity, is the engineering programme Quantum Motion is pursuing.