A5055069043- Quantum Mechanics and Non-Hermitian Physics
- Nonlinear Photonic Systems
- Topological Materials and Phenomena
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Advanced Fiber Laser Technologies
Vinča Institute of Nuclear Sciences
2024
University of Belgrade
2023-2024
Flat band lattice systems promote the appearance of perfectly compact bulk states, whereas topology favors edge localization. In this work, we report existence topological states on flux-dressed photonic graphene ribbons. We found that robust localization is achieved through a synergy Aharonov-Bohm caging and protection mechanisms. The nontriviality characterized both theoretical derivations experimental observations an integer Zak phase obtained from mean chiral displacement. Experiments...
Recently we have witnessed experimental realization of a Majorana zero-mode bound at vortex distortion induced in bipartite hexagonal photonic lattices. Here, address an open question the impact nonlinearity on dynamics by theoretically investigating abilities topologically protected zero-modes to guide, couple and lase light presence nonlinear effects. Light-intensity related enters scene through local lattice response driving properties: saturable gain tuned linear loss. We demonstrate...
<title>Abstract</title> Zigzag boundary shaping of the rhombic photonic graphene lattice imparts capability to selectively excite topologically protected edge modes with distinct spatial distributions. Concurrently, introduction a vortex sublattice distortion gives rise novel vortex-pivoted zero modes. The resulting diversity facilitates precise control over propagation light — an essential prerequisite for practical applications. We systematically investigate dynamics these in presence...
Systems with engineered flatband spectra are a postulate of high-capacity transmission links and candidate for high-temperature superconductivity. However, their operation relies on the edge or surface modes susceptible to fluctuations fabrication errors. While mode robustness can be enhanced by combination Aharonov-Bohm caging topological insulation, design corresponding flatbands requires approaches beyond standard $k$-vector-based methods. Here, we propose synthetic-flux probe as solution...