Hybrid Six-Level Rydberg Atomic Quantum Receiver for Multi-Band RF Communication

Quantum Physics [Submitted on 13 Apr 2026] Hybrid Six-Level Rydberg Atomic Quantum Receiver for Multi-Band RF Communication Lahiru Shyamal, Harini Hapuarachchi, Saman Atapattu, Jared H. Cole Rydberg atomic receivers have recently emerged as a promising platform for radio-frequency (RF) sensing and reception due to their intrinsic broadband response and calibration-free operation. Most existing receivers rely on four-level ladder-type electromagnetically induced transparency (EIT) schemes, which limit the number of simultaneously accessible RF transitions within a given atomic manifold. In this paper, a six-level hybrid Rydberg atomic quantum receiver (H-RAQR) architecture is proposed that combines cascaded and parallel RF coupling pathways to enable simultaneous multi-band RF reception within a single vapor-cell platform. A physically consistent system and electromagnetic coupling model is developed, and a steady-state analytical expression for the probe coherence is derived, establishing a direct relationship between the incident RF fields and the optical probe transmission. The analytical model is validated through numerical simulations of the Lindblad master equation with realistic relaxation and detuning parameters. Using the resulting communication signal representation, the achievable ergodic sum-rate performance of the receiver is evaluated. Numerical results demonstrate that the proposed hybrid architecture enables four simultaneous RF channels within the same six-level system and achieves higher throughput than conventional cascade Rydberg state (CRS) and parallel Rydberg state (PRS) receivers. These results demonstrate the potential of hybrid Rydberg receiver architectures for scalable multi-channel RF sensing and communication systems. Subjects: Quantum Physics (quant-ph); Signal Processing (eess.SP) Cite as: arXiv:2604.12106 [quant-ph]   (or arXiv:2604.12106v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.12106 Focus to learn more Submission history From: Saman Atapattu [view email] [v1] Mon, 13 Apr 2026 22:26:59 UTC (2,632 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 Change to browse by: eess eess.SP References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)