Related papers: Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver

Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver

URL: http://arxiv.org/abs/2502.20792v1
Date: Fri, 28 Feb 2025 07:18:30 GMT
Title: Cavity-Enhanced Rydberg Atomic Superheterodyne Receiver
Authors: Yukang Liang, Qinxia Wang, Zhihui Wang, Shijun Guan, Pengfei Yang, Yuchi Zhang, Jun He, Pengfei Zhang, Gang Li, Tiancai Zhang,
Abstract summary: The sensitivity of Rydberg superheterodyne receivers in free space is effectively determined by the signal-to-noise ratio (SNR)<n>In this work, we demonstrate a cavity-enhanced receiver, where an optical cavity significantly amplifies the interaction between the probe light and cesium atoms.
Score: 22.00121282352877
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: High-sensitivity measurements of the microwave electric field are important in applications of communication and metrology. \replaced{The sensitivity of traditional Rydberg superheterodyne receivers in free space is effectively determined by the signal-to-noise ratio (SNR), which is often considered equivalent to sensitivity in practical sensing applications.}{The sensitivity of the traditional Rydberg superheterodyne receivers in free space is limited by signal-to-noise contrast.} In this work, we demonstrate a cavity-enhanced receiver, where an optical cavity significantly amplifies the interaction between the probe light and cesium atoms, which substantially improves the signal-to-noise ratio via enhancing the expansion coefficient $ \kappa $. \added{Here, $\kappa$ is the edge slope of the single peak obtained by fitting the double-peak EIT-AT spectrum, characterizing the response of the probe light to the frequency detuning of the coupling laser.}The sensitivity is thus boosted by a factor of approximately 19 dB. This study highlights the pivotal role of optical cavities in advancing Rydberg-based detection systems, offering a promising approach for high-sensitivity microwave electric field measurements.

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