Quantum seminar | 21 February 2024

ITMO Univeristy
Cascades and quadruplets of photonic resonances in non-Hermitian dielectric structures

In our world, most phenomena are described by non-Hermitian physics, which gave us bound states in continuum (BIC) with a big quality factor, paired exceptional points (EP) and bulk Fermi arcs (FA) connecting them. The main result of this work is the discovery of two new effects: cascades of BICs, as well as quadruplet, consisting of two EPs, connected by a bulk FA and adjacent to EPs in the parametric space of two BICs.

Related publications:

  1. N. Solodovchenko, K. Samusev, D. Bochek, M. Limonov, “Bound states in the continuum in strong-coupling and weak-coupling regimes under the cylinder – ring transition”, Nanophotoniocs 10 (2021)
  2. D. Bochek, N. Solodovchenko, D. Yavsin, A. Pevtsov, K. Samusev, M. Limonov, Bound states in the continuum versus material losses: Ge2Sb2Te5 as an example”, PRB 105 (2022)
  3. N. Solodovchenko, M. Sidorenko, T. Seidov, I. Popov, E. Nenasheva, K. Samusev, M. Limonov, “Cascades of Fano resonances in light scattering by dielectric particles”, Materials Today (2022)
  4. A. Chetverikova, M. Limonov, M. Sidorenko, K. Samusev, N. Solodovchenko, “Radial and axial photonic galleries of dielectric rings”, PNFA 57 (2023)
  5. N. Solodovchenko, K. Samusev, M. Limonov, “Quadruplets of exceptional points and bound states in the continuum in dielectric rings”, PRB 109 (2024)