https://doi.org/10.1140/epjp/s13360-025-06722-1
Regular Article
Dynamics of pulse propagation and all-optical switching in a closed-loop Y-type four-level atomic medium
1
Ho Chi Minh City University of Industry and Trade, Ho Chi Minh City, Vietnam
2
Vinh University, 182 Le Duan Street, Nghe An Province, Vietnam
Received:
17
April
2025
Accepted:
5
August
2025
Published online:
2
September
2025
We investigate the dynamics of the pulse propagation and all-optical switching behavior in a closed-loop Y-type four-level atomic medium under the influence of a microwave field and the relative phase by numerical simulations. Results show that the transition between transparency and absorption regimes of the probe pulse depends on the microwave field's activation or deactivation in different frequency and relative phase domains. By fine-tuning the relative phase and frequency detuning between the two control fields, we can seamlessly switch between single and double transparency windows, enabling the probe pulse to maintain a stable shape and supporting the realization of single- or dual-channel optical switching. Notably, when the relative phase equals an odd multiple of π/2, the system always obtains double dark resonance, indicating that the relative phase is an effective control parameter for tailoring pulse propagation. Additionally, the switching dynamics can be either synchronous or anti-synchronous, depending on how the microwave field and relative phase are adjusted. The obtained results offer promising prospects for multi-channel all-optical switching and optical memory in advanced communication systems.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
