Quantum 2025 – wissenschaftliches Programm
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MON: Monday Contributed Sessions
MON 23: Poster Session: Fundamental Aspects and Model Systems
MON 23.25: Poster
Montag, 8. September 2025, 18:30–20:30, ZHG Foyer 1. OG
Rabi-like mode conversion in nonlinear photonic meta atoms — •Oliver Melchert1,2, Shihao Zhang1,2, Ihar Babushkin1,2, Uwe Morgner1,2, and Ayhan Demircan1,2 — 1Institute of Quantum Optics, Leibniz Universität Hannover, Hannover, Germay — 2PhoenixD, Leibniz Universität Hannover, Hannover, Germay
We investigate the interaction dynamics of optical pulses in the higher-order nonlinear Schrödinger equation with mixed domains of normal and anomalous dispersion. This system enables one-dimensional nonlinear photonic meta atoms, i.e. composite solitary waves that support direct optical analogues of quantum mechanical bound states: the stationary atom potential is defined by the refractive index change induced by a fundamental soliton; its bound modes are realized by a weak co-propagating pulse. Coupling of both pulses is achieved via cross-phase modulation accross a vast frequency gap. Here, we demonstrate Rabi-like transfer of energy between the bound modes, driven by periodic oscillations of the atom potential in terms of a nonfundamental soliton. Coupled-mode theory shows that the underlying resonance phenomenon is reversible and parity maintaing. Beyond the quantum analogy we observe phase-matched coupling to resonant radiation, resulting in exponentially slow decay of the bound energy.
Keywords: Nonlinear Schrödinger equation; Solitonic atom; Rabi oscillation; Resonant radiation