Simultaneous multiband radio-frequency detection using high-orbital-angular-momentum states in a Rydberg-atom receiver

Allinson, Gianluca; Jamieson, Matthew J; Mackellar, Andrew R; Downes, Lucy A; Adams, C Stuart; Weatherill, Kevin J

Abstract

We demonstrate simultaneous detection of radio-frequency (rf) fields ranging from the very high-frequency (VHF) band (128 MHz) to terahertz frequencies (0.61 THz) using high-orbital-angular-momentum (ℓ) states in a caesium Rydberg-atom receiver. rf fields are applied concurrently to a series of atomic transitions, where the application of each field allows access to the next-highest ℓ state and the energy separations between states become progressively smaller, allowing access to a very wide range of radio frequencies. We show that the optical response of the system in the presence of the rf fields can be reproduced theoretically using a simple Lindblad-master-equation approach. Furthermore, we demonstrate experimentally that a series of amplitude-modulated tones can be detected simultaneously using a wide range of carrier frequencies. This demonstration opens the way for Rydberg receivers to access low-frequency rf bands at low principal quantum number and allows for communications across multiple bands simultaneously using a single optical receiver. Moreover, the experimental method presented allows for high-resolution spectroscopy of high-orbital-angular-momentum states in alkali-metal atoms. Published by the American Physical Society 2024

Citation

Allinson, G., Jamieson, M. J., Mackellar, A. R., Downes, L. A., Adams, C. S., & Weatherill, K. J. (2024). Simultaneous multiband radio-frequency detection using high-orbital-angular-momentum states in a Rydberg-atom receiver. Physical Review Research, 6(2), Article 023317. https://doi.org/10.1103/physrevresearch.6.023317

• Journal Article Type: Article
• Acceptance Date: Apr 22, 2024
• Online Publication Date: Jun 24, 2024
• Publication Date: 2024-06
• Deposit Date: Nov 21, 2023
• Publicly Available Date: Jun 24, 2024
• Journal: Physical Review Research
• Electronic ISSN: 2643-1564
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 2
• Article Number: 023317
• DOI: https://doi.org/10.1103/physrevresearch.6.023317
• Public URL: https://durham-repository.worktribe.com/output/1945652