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arXiv · 2502.13973

Theory of composite Ramsey sequences of radiofrequency pulses beyond the rotating wave approximation

V. I. Yudin·O. N. Prudnikov·A. V. Taichenachev·M. Yu. Basalaev·V. G. Pal'chikov·S. N. Bagayev
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Abstract

We develop a theory of composite Ramsey sequences of rf pulses interacting with the Zeeman structure at the long-lived atomic level, beyond the rotating wave approximation. Such sequences are proposed in experiments to detect the violation of local Lorentz invariance [R. Shaniv, et al., Phys. Rev. Lett. 120, 103202 (2018)]. Based on Fourier analysis, we have shown that taking into account non-resonant contributions leads to a radical change in the dynamics of the quantum system (with respect to the rotating wave approximation) in the case when the number of Ramsey pulses exceeds several tens. As a result, the effectiveness of using such rf pulses sequences to test local Lorentz invariance has not yet been fully determined and requires additional research.

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V. I. Yudin, O. N. Prudnikov, A. V. Taichenachev, M. Yu. Basalaev, V. G. Pal'chikov, S. N. Bagayev. 2025-02-04. Theory of composite Ramsey sequences of radiofrequency pulses beyond the rotating wave approximation. https://doi.org/10.1134/s0021364024602033

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