Unveiling photon-photon coupling induced transparency and absorption

• DOI: 10.48550/arxiv.2406.19771
• Publication Date: 2024-06-28
• Authors: Kuldeep Kumar Shr...; Ansuman Sahu; Biswanath Bhoi; Rajeev Singh
• Keywords: Two-Photon Absorption; Two-photon excitation microscopy; Electromagnetically Induced Transparency

This study presents the theoretical foundations of an analogous electromagnetically induced transparency (EIT) and absorption (EIA) which we are referring as coupling (CIT) (CIA) respectively, along with exploration transition between these phenomena. We provide a concise phenomenological description analytical expressions for transmission spectra dispersion elucidating how interplay coherent dissipative interactions in coupled system results emergence level repulsion attraction, corresponding to CIT CIA, respectively. The model is validated through numerical simulations using hybrid comprising split ring resonator (SRR) electric inductive-capacitive (ELC) planar geometry. analyse two cases while keeping ELC parameters constant; one involving dynamic adjustment SRR size fixed gap, other entailing varying gap maintaining constant size. Notably, first case, profile signal demonstrates repulsion, second case effectively showcasing These simulated findings not only align but also underscore versatility our approach. Subsequently, expand more general demonstrating that controlled from CIA achievable by manipulating dissipation rate individual modes within system, leading either or modes. pathway designing systems can control group velocity light, offering potential applications fields optical switching quantum information technology.