Inverse design of poles and zeros: tailoring phase control in metasurfaces

@misc{zhang2026inverse,
  title = {{Inverse design of poles and zeros: tailoring phase control in metasurfaces}},
  author = {Junhe Zhang and Seoyoung Kim and Hyun Jung Kim and Juejun Hu},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.17587},
  eprint = {2610.17587},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.17587},
}

TY  - UNPB
TI  - Inverse design of poles and zeros: tailoring phase control in metasurfaces
AU  - Junhe Zhang
AU  - Seoyoung Kim
AU  - Hyun Jung Kim
AU  - Juejun Hu
PY  - 2026
DA  - 2026/10/16
PB  - arXiv
DO  - 10.48550/arxiv.2610.17587
UR  - https://arxiv.org/abs/2610.17587
AB  - We develop a physically interpretable inverse-design framework for generalized Huygens metasurfaces, using prescribed scattering poles and zeros to engineer resonance interference and transmission-phase control. Compared with direct optimization of transmission or reflection coefficients, this approach offers a physically transparent route to rationally controlling resonance properties, including linewidth and group delay, while reducing computational work. The resulting designs demonstrate how near-unity transmission and 2π phase excursion can arise from resonance interference. These signatures of the Kerker effect extend beyond the conventional alignment of electric and magnetic dipole resonances to other mechanisms, including guided-mode resonances and quasi-bound states in the continuum. We further optimize the Kerker condition across a continuum of refractive-index states in a reconfigurable phase change material metasurface, enabling high-transmission 2π phase tuning. Our results establish a versatile and practical approach to metasurface phase control through the targeted design of scattering poles and zeros.
ER  -