Six-wave mixing of optical and microwave fields using Rydberg excitations in thermal atomic vapor

Tanim Firdoshi; Sujit Garain; Suman Mondal; Ashok K. Mohapatra

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arXiv · 2207.01835

Six-wave mixing of optical and microwave fields using Rydberg excitations in thermal atomic vapor

Tanim Firdoshi·Sujit Garain·Suman Mondal·Ashok K. Mohapatra

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Abstract

Rydberg EIT-based microwave sensing has limited microwave-to-optical conversion bandwidth due to fundamental limitation in the optical pumping rate to its dark state. We demonstrate a parametric six-wave mixing of optical probe and coupling fields driving the atoms to a Rydberg state via two-photon excitation and two microwave fields with frequency offset of $\delta$ driving the Rydberg-Rydberg transition in thermal atomic vapor. Microwave-to-optical conversion bandwidth of $17$ MHz is achieved in the present experiment which is limited by the available coupling power. Further theoretical investigation of the system presents higher modulation bandwidth with larger coupling Rabi frequency.

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Tanim Firdoshi, Sujit Garain, Suman Mondal, Ashok K. Mohapatra. 2022-07-05. Six-wave mixing of optical and microwave fields using Rydberg excitations in thermal atomic vapor. https://arxiv.org/abs/2207.01835

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