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arXiv · 2411.13930

Nonlinear dynamics in an artificial feedback spin maser

Mingjun Feng·Lan Wu·Guobin Liu
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Abstract

Spin masers with optical detection and artificial feedback are widely used in fundamental and practical applications. However, a full picture of the maser dynamics is still absent. By solving the feedback driven Bloch equations, we simulated the dynamics of an ideal spin maser in a broad parameter space. Rich nonlinear dynamics including high order harmonics generation, nonperiodic spin oscillations and frequency comb were revealed when the artificial feedback interaction exceeds the normal spin-field interaction. We also propose a pulse feedback spin maser protocol, which constructs an ultralow field magnetic frequency comb and could be useful in precision atomic magnetometers in searching for spin-dependent exotic interactions.

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Mingjun Feng, Lan Wu, Guobin Liu. 2024-11-21. Nonlinear dynamics in an artificial feedback spin maser. https://doi.org/10.1103/physreva.111.023118

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