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- Title
Exclusive Effect in Rydberg Atom-Based Multi-Band Microwave Communication.
- Authors
You, Shuhang; Cai, Minghao; Zhang, Haoan; Xu, Zishan; Liu, Hongping
- Abstract
We have demonstrated a Rydberg atom-based two-band communication with the optically excited Rydberg state coupled to another pair of Rydberg states by two microwave fields, respectively. The initial Rydberg state is excited by a three-color electromagnetically-induced absorption in rubidium vapor cell via cascading transitions, with all of them located in infrared bands: a 780 nm laser servers as a probe to monitor the optical transmittancy via transition 5 S 1 / 2 → 5 P 3 / 2 , 776 nm and 1260 nm lasers are used to couple the states 5 P 3 / 2 and 5 D 5 / 2 and states 5 D 5 / 2 and 44 F 7 / 2 . Experimentally, we show that two channel communications carried on the two microwave transitions influence each other irreconcilably, so that they cannot work at their most sensitive microwave-optical conversion points simultaneously. For a remarkable communication quality for both channels, the two microwave fields both have to make concessions to reach a common microwave-optical gain. The optimized balance for the two microwave intensities locates at E MW 1 = 6.5 mV / cm and E MW 2 = 5.5 mV / cm in our case. This mutual exclusive influence is theoretically well-explained by an optical Bloch equation considering all optical and microwave field interactions with atoms.
- Subjects
MICROWAVE communication systems; RYDBERG states; BLOCH equations; RUBIDIUM; INFRARED absorption; MICROWAVES
- Publication
Photonics, 2023, Vol 10, Issue 3, p328
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics10030328