Quantum information networks could be extremely secure and could also allow new quantum computers to work together to solve currently unsolvable problems. The main problem has been to preserve fragile quantum information over long distances.
Researcher were able to store and transmit bits of quantum information, known as qubits, using a diamond in which they had replaced two carbon atoms with one silicon atom.
Synthetic diamonds could serve as quantum repeaters for networks based on qubits.
The team produced neutral silicon vacancies in diamonds.