https://doi.org/10.1140/epjqt/s40507-023-00212-y
Research
A Rydberg atom-based amplitude-modulated receiver using the dual-tone microwave field
1
The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, 92 Wucheng Road, 037006, Taiyuan, Shanxi Province, China
2
Collaborative Innovation Center of Extreme Optics, Shanxi University, 92 Wucheng Road, 037006, Taiyuan, Shanxi Province, China
a
yjp@sxu.edu.cn
f
wlr@sxu.edu.cn
Received:
24
July
2023
Accepted:
13
December
2023
Published online:
2
January
2024
We propose a Rydberg atom-based receiver for amplitude-modulation (AM) reception utilizing a dual-tone microwave field. The pseudo-random binary sequence (PRBS) signal is encoded in the basic microwave field (B-MW) at the frequency of 14.23 GHz. The signal can be decoded by the atomic receiver itself but more obvious with the introduction of an auxiliary microwave (A-MW) field. The receiver’s amplitude variations corresponding to microwave field are simulated by solving density matrices to give this mechanism theoretical support. An appropriate AM frequency is obtained by optimizing the signal-to-noise ratio, guaranteeing both large data transfer capacity (DTC) and high fidelity of the receiver. The power of two MW fields, along with the B-MW field frequency, is studied to acquire larger DTC and wider operating bandwidth. Finally, the readout of PRBS signals is performed by both the proposed and conventional mechanisms, and the comparison proves the obvious increment of DTC with the proposed scheme. This proof-of-principle demonstration exhibits the potential of the dual-tone scheme and offers a novel pathway for Rydberg atom-based microwave communication, which is beneficial for long-distance communication and weak signal perception outside the laboratory.
Key words: Rydberg atom / Atomic receiver / Amplitude-modulation / Microwave communication
© The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
