Rydberg Atomic Quantum Receivers for Classical Wireless Communications and Sensing: Their Models and Performance

2024-12-07

arXiv.org

AI Summary

The absence of a rigorous system-level model and quantitative performance characterization for Rydberg atom quantum receivers (RAQRs) impedes their integration into classical wireless communication and sensing systems. Method: This paper establishes, for the first time, an end-to-end RAQR reception scheme and its equivalent baseband signal model, introducing a unified analytical framework that jointly incorporates quantum sensing, optical detection, and RF modeling. Contribution/Results: We derive fundamental theoretical gain bounds for RAQRs relative to classical RF receivers, demonstrating ≥27 dB and ≥40 dB improvements in received signal-to-noise ratio (SNR) under photon shot-noise-limited and standard quantum-limited conditions, respectively. These results fill critical gaps in RAQR system modeling, performance quantification, and design guidance for classical infrastructure. The work provides a verifiable theoretical foundation and actionable engineering pathway toward quantum-enhanced wireless technologies.

Technology Category

• Machine Learning: Quantum Machine Learning
• Knowledge Representation and Reasoning: Qualitative Reasoning
• Intelligent Robots: Multimodal Perception & Sensor Fusion

Application Category

• Search and Retrieval-Augmented AI: Web evaluation methodologies and metrics
• Security and Privacy: Large-scale security measurements
• Semantics and Knowledge: Methods to enhance, augment, integrate or synergize semantic models such as knowledge graphs and LLMs

Abstract

The significant progress of quantum sensing technologies offer numerous radical solutions for measuring a multitude of physical quantities at an unprecedented precision. Among them, Rydberg atomic quantum receivers (RAQRs) emerge as an eminent solution for detecting the electric field of radio frequency (RF) signals, exhibiting great potential in assisting classical wireless communications and sensing. So far, most experimental studies have aimed for the proof of physical concepts to reveal its promise, while the practical signal model of RAQR-aided wireless communications and sensing remained under-explored. Furthermore, the performance of RAQR-based wireless receivers and their advantages over classical RF receivers have not been fully characterized. To fill these gaps, we introduce the RAQR to the wireless community by presenting an end-to-end reception scheme. We then develop a corresponding equivalent baseband signal model relying on a realistic reception flow. Our scheme and model provide explicit design guidance to RAQR-aided wireless systems. We next study the performance of RAQR-aided wireless systems based on our model, and compare them to classical RF receivers. The results show that the RAQR is capable of achieving a substantial received signal-to-noise ratio (SNR) gain of over $27$ decibel (dB) and $40$ dB in the photon shot limit regime and the standard quantum limit regime, respectively.

Problem

• Developing signal models for RAQR-aided wireless communications and sensing
• Characterizing performance advantages of RAQR over classical RF receivers
• Achieving substantial SNR gains in quantum limit regimes

Innovation

• Rydberg atomic quantum receivers for RF detection
• End-to-end reception scheme for wireless systems
• Substantial SNR gain in quantum limit regimes