Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms
Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms
We report long coherence times (up to 300 ms) for near-surface bismuth donor electron spins in silicon coupled to a superconducting microresonator, biased at a clock transition. This enables us to demonstrate the partial absorption of a train of weak microwave fields in the spin ensemble, their storage for 100 …