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Photonic Anomalous Quantum Hall Effect
Sunil Mittal, Venkata Vikram Orre, Daniel Leykam +2
We experimentally realize a photonic analogue of the anomalous quantum Hall insulator using a two-dimensional (2D) array of coupled ring resonators. Similar to the Haldane model, o…
Reconfigurable topological phases in next-nearest-neighbor coupled resonator lattices
Daniel Leykam, S. Mittal, M. Hafezi +1
We present a reconfigurable topological photonic system consisting of a 2D lattice of coupled ring resonators, with two sublattices of site rings coupled by link rings, which can b…
The FLAME-slab method for electromagnetic wave scattering in aperiodic slabs
Shampy Mansha, Igor Tsukerman, Y. D. Chong
The proposed numerical method, "FLAME-slab," solves electromagnetic wave scattering problems for aperiodic slab structures by exploiting short-range regularities in these structure…
Coherent perfect absorbers: linear control of light with light
Denis G. Baranov, Alex Krasnok, Timur Shegai +2
Absorption of electromagnetic energy by a material is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation and photodetection. Co…
Optical isolation with nonlinear topological photonics
Xin Zhou, You Wang, Daniel Leykam +1
It is shown that the concept of topological phase transitions can be used to design nonlinear photonic structures exhibiting power thresholds and discontinuities in their transmitt…
Flat bands in lattices with non-Hermitian coupling
Daniel Leykam, Sergej Flach, Y. D. Chong
We study non-Hermitian photonic lattices that exhibit competition between conservative and non-Hermitian (gain/loss) couplings. A bipartite sublattice symmetry enforces the existen…