A quantum-logic gate between distant quantum-network modules

Quantum gating at a distance The processing of quantum information is reliant on the encoding and manipulation states qubit. Superconducting circuits are most advanced platform present, but there an issue with cross-talk between qubits challenge error correction as systems scaled up. Another approach being pursued modular in which spatially separated. Daiss et al. demonstrate operation gate one qubit conditionally controls state another separated by 60 meters (see Perspective Hunger). Because independent, it could be extended from demonstrated neutral atoms to ions, impurity vacancy centers, or even combination these qubits. Science , this p. 614 ; see also 576