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arXiv · 2208.00120

Coherence of Rabi oscillations with spin exchange

Chris Kiehl·Daniel Wagner·Ting-Wei Hsu·Svenja Knappe·Cindy A. Regal·Tobias Thiele
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Abstract

Rabi measurements in atomic vapor cells are of current interest in a range of microwave imaging and sensing experiments, but are increasingly in a parameter space outside of theoretical studies of coherence defined by spin-exchange collisions. Here, we study the coherence of Rabi oscillations in vapor cells by employing continuous non-destructive readout of the hyperfine manifold of $^{87}$Rb using Faraday rotation. We develop a full model for spin-exchange (SE) coherence for hyperfine transitions that takes into account a non-static population distribution. In this regime, Rabi oscillations exhibit nontrivial time-domain signals that allow verification of vapor-cell parameters. We find excellent agreement between theory and experiment, which will aid in benchmarking sensitivities of Rabi measurement applications.

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Chris Kiehl, Daniel Wagner, Ting-Wei Hsu, Svenja Knappe, Cindy A. Regal, Tobias Thiele. 2022-07-30. Coherence of Rabi oscillations with spin exchange. https://arxiv.org/abs/2208.00120

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