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arXiv · 2005.09275

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

V. Ranjan·J. O'Sullivan·E. Albertinale·B. Albanese·T. Chanelière·T. Schenkel·D. Vion·D. Esteve·E. Flurin·J. J. L. Morton·P. Bertet
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Abstract

A long-lived multi-mode qubit register is an enabling technology for modular quantum computing architectures. For interfacing with superconducting qubits, such a quantum memory should be able to store incoming quantum microwave fields at the single-photon level for long periods of time, and retrieve them on-demand. Here, we demonstrate the partial absorption of a train of weak microwave fields in an ensemble of bismuth donor spins in silicon, their storage for 100 ms, and their retrieval, using a Hahn-echo-like protocol. The long storage time is obtained by biasing the bismuth donors at a clock transition. Phase coherence and quantum statistics are preserved in the storage.

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V. Ranjan, J. O'Sullivan, E. Albertinale, B. Albanese, T. Chanelière, T. Schenkel, D. Vion, D. Esteve, E. Flurin, J. J. L. Morton, P. Bertet. 2020-05-19. Multimode storage of quantum microwave fields in electron spins over 100 ms. https://doi.org/10.1103/physrevlett.125.210505

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