Precision timing of radio-frequency pulses using Rydberg atom electrometry

S. M. Bohaichuk; D. Booth; J. Shaffer

doi:10.1117/12.2609012

5 March 2022 Precision timing of radio-frequency pulses using Rydberg atom electrometry

S. M. Bohaichuk, D. Booth, J. Shaffer

Proceedings Volume 12009, Quantum Sensing and Nano Electronics and Photonics XVIII; 120090C (2022) https://doi.org/10.1117/12.2609012
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

In this work, we present theoretical and experimental data on detecting pulsed radio frequency fields. We focus on pulse arrival time detection accuracy. We measure two-photon Rydberg atom EIT in response to ~μs pulse-modulated radio-frequency signals resonant with a Rydberg-Rydberg transition, using a room temperature cesium vapor cell with the lasers locked on atomic resonances. We study the dependence of the atomic response on optical and radio-frequency Rabi frequencies as well as effects such as atomic collisions, ionization, and transit time broadening. We find good agreement with time-dependent simulations performed using a density matrix approach, with a dark state added to account for Rydberg atom decay. We present factors that can influence the sensitivity and timing precision of radio frequency pulses detected under these conditions. Such a system demonstrates potential for the detection of weak radio-frequency pulses in communications and radar applications.

Conference Presentation

Citation Download Citation

S. M. Bohaichuk, D. Booth, and J. Shaffer "Precision timing of radio-frequency pulses using Rydberg atom electrometry", Proc. SPIE 12009, Quantum Sensing and Nano Electronics and Photonics XVIII, 120090C (5 March 2022); https://doi.org/10.1117/12.2609012

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