ORIGINAL RESEARCH article
Front. Quantum Sci. Technol.
Sec. Quantum Engineering
Volume 4 - 2025 | doi: 10.3389/frqst.2025.1526469
This article is part of the Research TopicRecent Advances in Quantum State Engineering using Atoms and PhotonsView all 3 articles
Phase-dependent transparency in a two-level system with applications to all-optical switching
Provisionally accepted
- Stevens Institute of Technology, Hoboken, United States
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The phenomenon of transparency, conventionally studied in three and higher level atomic systems, is extended to the case of a two-level system (TLS), where we use a semiclassical framework to describe the transparent propagation of classical fields in a medium of TLS scatterers. We demonstrate a new form of transparency with fast pulses, accounting for the initial state of the TLS, which we call phase-dependent transparency. Using the phenomenon of photon locking, we showed that TLSs initialized in maximum coherence states exhibit transparency to resonant fields when there is phase-matching between the phase of the atomic coherence and that of the probe field. An application to the problem of all-optical switching is also discussed, where on-demand transmission is generated by controlling the relative phase between a π/2 pump pulse and the transmitted probe pulse.
Keywords: atomic molecular and optical physics, quantum optics, All optical switching, Quantum control, quantum physics
Received: 11 Nov 2024; Accepted: 25 Jun 2025.
Copyright: © 2025 Ramaswamy and Malinovskaya. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Aneesh Ramaswamy, Stevens Institute of Technology, Hoboken, United States
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