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arXiv:2107.05919 · Physical Review Letters

Periodic Cavity State Revivals from Atomic Frequency Combs

Matthias Zens, Dmitry O. Krimer, Himadri Shekhar Dhar, Stefan Rotter

Published Oct 29, 2021• 4 citations
arXivHTMLPDF

Abstract

Spin ensembles with a comb-shaped spectrum have shown exciting properties as efficient quantum memories. Here, we present a rigorous theoretical study of such atomic frequency combs in the strong coupling limit of cavity QED, based on a full quantum treatment using tensor-network methods. Our results demonstrate that arbitrary multiphoton states in the cavity are almost perfectly absorbed by the spin ensemble and reemitted as parity-flipped states at periodic time intervals. Fidelity values near unity are achieved in these revived states by compensating for energy shifts induced by the strong spin-cavity coupling through adjustments of individual coupling values of the teeth in the atomic frequency comb.

DOI
10.1103/physrevlett.127.180402

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