Researchers have discovered how to use ion beams to create long strings of “color center” quantum bits, or qubits, in a diamond lattice. Coupling large numbers of qubits has been one of quantum computing’s challenges. Someday, these strings could be made at facilities like the Lab’s BELLA Center. https://newscenter.lbl.gov/2021/04/27/ion-beams-mean-a-quantum-leap-for-color-center-qubits/