Analytical solutions for optimal photon absorption into inhomogeneous spin memories

• URL: http://arxiv.org/abs/2401.04717v1
• Date: Tue, 9 Jan 2024 18:42:18 GMT
• Title: Analytical solutions for optimal photon absorption into inhomogeneous spin memories
• Authors: J\'ozsef Zsolt Bern\'ad, Michael Schilling, Yutian Wen, Matthias M. M\"uller, Tommaso Calarco, Patrice Bertet, Felix Motzoi
• Abstract summary: We investigate for optimal photon absorption a quantum electrodynamical model of an inhomogeneously-broadened spin ensemble coupled to a single-mode cavity. We find the optimal cooperativity for different parameters and identify cases where absorption with a success probability larger than $99%$ is achieved.
• Score: 0.7388859384645263
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate for optimal photon absorption a quantum electrodynamical model of an inhomogeneously-broadened spin ensemble coupled to a single-mode cavity. We consider a one-photon input pulse and obtain a simple one-parameter form for its optimal shape for absorption in the spin ensemble. Solutions to this problem are developed without using perturbation theory concerning the spin ensemble. Furthermore, we exploit the possibility of modulating the frequency and coupling rate of the resonator. We show some optimal scenarios and demonstrate the usefulness of our approach for the design of efficient quantum memories. In particular, we find the optimal cooperativity for different parameters and identify cases where absorption with a success probability larger than $99\%$ is achieved.

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