Reported in Physical Review X, the experiment confirms a theoretical prediction made 20 years ago and may provide a foundation for future quantum technologies. Extending those correlations across physically separated qubits (quantum bits) could help researchers build larger quantum computers and connect them through quantum networks. “By stabilizing the entangled states remotely, our approach is fully autonomous and requires no active control or measurement.” To uncover the underlying quantum state before that information was lost, the researchers collected measurements lasting only 20–80 nanoseconds. The autonomous process is not yet as efficient as approaches that actively control qubit states.