Rydberg atom-based field sensing enhancement using a split-ring resonator

• URL: http://arxiv.org/abs/2202.08954v1
• Date: Fri, 18 Feb 2022 01:44:56 GMT
• Title: Rydberg atom-based field sensing enhancement using a split-ring resonator
• Authors: Christopher L. Holloway, Nikunjkumar Prajapati, Alexandra B. Artusio-Glimpse, Samuel Berweger, Yoshiaki Kasahara, Andrea Alu, and Richard W. Ziolkowski
• Abstract summary: We investigate the use of a split-ring resonator incorporated with an atomic-vapor cell to improve sensitivity and the minimal detectable electric field of Rydberg atom-based sensors. By combining EIT with a heterodyne Rydberg atom-based mixer approach, the SRR allows for the a sensitivity of 5.5$mu$V/m$sqrtrm Hz$, which is two-orders of magnitude improvement in sensitivity than when the SRR is not used.
• Score: 50.591267188664666
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate the use of a split-ring resonator (SRR) incorporated with an atomic-vapor cell to improve the sensitivity and the minimal detectable electric (E) field of Rydberg atom-based sensors. In this approach, a sub-wavelength SRR is placed around an atomic vapor-cell filled with cesium atoms for E-field measurements at 1.3~GHz. The SRR provides a factor of 100 in the enhancement of the E-field measurement sensitivity. Using electromagnetically induced transparency (EIT) with Aulter-Townes splitting, E-field measurements down to 5~mV/m are demonstrated with the SRR, while in the absence of the SRR, the minimal detectable field is 500~mV/m. We demonstrate that by combining EIT with a heterodyne Rydberg atom-based mixer approach, the SRR allows for the a sensitivity of 5.5~$\mu$V/m$\sqrt{{\rm Hz}}$, which is two-orders of magnitude improvement in sensitivity than when the SRR is not used.

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