Quantum communication: Using microwaves to efficiently control electron spins of diamond qubits

https://phys.org/news/2024-10-quantum-communication-microwaves-efficiently-diamond.html

"diamonds' tin vacancies (where diamond atoms replaced by tin) have optical/ magnetic properties, can be used as qubits when precisely controlled using microwaves... extending qubit coherence time to as long as 10 ms using dynamical decoupling largely suppresses interference... diamond qubits are solid phase so easier to work with... controlled with superconducting waveguides efficiently directing microwaves to defects without generating heat (temperature near absolute zero)... transfers qubit quantum states to photons"