Princeton researchers have created a superconducting qubit that stays stable more than three times longer than previous designs, marking a major leap toward practical quantum computers.

Built from a single erbium atom, a hybrid quantum bit encodes data magnetically and beams it through fiber-optic wavelengths.

An illustration of the energy exchanges taking place during the experiment. Credit: I. Maillette de Buy Wenniger A new study in Physical Review Letters illuminates the intricacies of energy exchanges ...