In 1998, researchers at the National Institute of Standards and Technology (NIST) laid out a proposal for building a quantum computer that uses movable ions as qubits. This is analogous to a charge-coupled device (CCD) camera, which stores and processes imaging information as movable electrical charges in coupled pixels. The QCCD computer, instead, stores quantum information in the internal state of ions that are transported between different processing zones using dynamic electromagnetic fields. Quantinuum’s quantum computers follow the QCCD architecture, which enables the low error rates of these devices and all-to-all connectivity.