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

Author:

Holloway Christopher L.1ORCID,Prajapati Nikunjkumar1ORCID,Artusio-Glimpse Alexandra B.1ORCID,Berweger Samuel1ORCID,Simons Matthew T.1ORCID,Kasahara Yoshiaki2,Alù Andrea34ORCID,Ziolkowski Richard W.5ORCID

Affiliation:

1. National Institute of Standards and Technology, Boulder, Colorado 80305, USA

2. Advanced Science Research Center, City University of New York, New York, 10031 New York, USA

3. The University of Texas, Austin, Texas 78712, USA

4. Graduate Center, City University of New York, New York, NY 10016, USA

5. University of Technology Sydney, Ultimo, NSW, Australia

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 a sensitivity of 5.5  μV/m[Formula: see text], which is two-orders of magnitude improvement in sensitivity than when the SRR is not used.

Funder

Defense Advanced Research Projects Agency

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

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