Multimode storage of quantum microwave fields in electron spins over 100 ms

V. Ranjan (1, 2) , J. O’sullivan (3) , E. Albertinale (1, 2) , B. Albanese (1, 2) , T. Chanelière (4) , T. Schenkel (5) , D. Vion (1, 2) , D. Esteve (1, 2) , E. Flurin (1, 2) , J.J.L. Morton (6, 3) , P. Bertet (1, 2)

1 SPEC - UMR3680 - Service de physique de l'état condensé
2 QUANTRONICS - Quantronics Group
3 London Centre for Nanotechnology
4 NEEL - NPSC - Nanophysique et Semiconducteurs
5 LBNL - Lawrence Berkeley National Laboratory [Berkeley]
6 UCL - University College of London [London]

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 ms, and their retrieval, using a Hahn-echo-like protocol. Phase coherence and quantum statistics are preserved in the storage.

Domaines: Physique [physics]

V. Ranjan, J. O’sullivan, E. Albertinale, B. Albanese, T. Chanelière, et al.. Multimode storage of quantum microwave fields in electron spins over 100 ms. Physical Review Letters, 2020, 125 (21), pp.210505. ⟨10.1103/PhysRevLett.125.210505⟩. ⟨cea-03116409⟩