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arXiv · 2310.10615

Rydberg Raman-Ramsey (R${}^3$) resonances in atomic vapor

Rob Behary·Irina Novikova·Eugeniy Mikhailov·Alex Gill·Aaron Buikema
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Abstract

The sensitivity of electric field sensors based on two-photon electromagnetically induced transparency (EIT) involving highly excited Rydberg states in thermal atoms is often limited by the residual Doppler effect and optical power broadening. Here, we propose a method to reduce the EIT spectral linewidth using a Ramsey interrogation approach, allowing multiple interrogations of atomic coherence, using either temporally or spatially separated laser beams. Our theoretical calculations predict that the linewidth of such Raman-Ramsey spectral features can be substantially reduced compare to a standard Doppler-broadened EIT, opening a possibility to improved sensitivity of Rydberg atomic vapor-based sensors. We also discuss some preliminary experimental efforts toward observing Raman-Ramsey resonances for both spatially and temporally separated interrogation approaches and associated technical challenges.

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Rob Behary, Irina Novikova, Eugeniy Mikhailov, Alex Gill, Aaron Buikema. 2023-10-16. Rydberg Raman-Ramsey (R${}^3$) resonances in atomic vapor. https://arxiv.org/abs/2310.10615

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