786 citations · 5.7k across the 70 of their papers we have counts for
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Near-zero index magneto-optical medium realized with an unpaired Dirac point
Xin Zhou, Daniel Leykam, A. B. Khanikaev +1
We realize an unpaired Dirac cone at the center of the first Brillouin zone, using a gyromagnetic photonic crystal with broken square sub-lattice symmetry and broken time reversal…
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…