M. H. Teimourpour

TL;DR: Topological effects, first observed in condensed matter physics, are now also studied in optical systems, extending the scope to active topological devices, and Zhao et al. combine topological physics with non-Hermitian photonics, demonstrating a topological microlaser on a silicon platform.

TL;DR: In this paper, a hybrid silicon microlaser structure supporting a topologically protected zero-mode lasing was proposed, where the mode competition is diminished in favor of a pre-defined topological state, reflecting the charge conjugation symmetry induced by the gain profile.

TL;DR: In this article, the authors describe a mechanism that provides tight-binding models with an enriched, topologically nontrivial band structure, which can be interpreted as the passage from a Klein-Gordon equation to a Dirac equation.

TL;DR: In this article, an active topological hybrid silicon microlaser array respecting the charge-conjugation symmetry is presented. And the created symmetry favors the lasing of a protected zero-mode, where robust singlemode laser action prevails even with intentionally introduced perturbations.

TL;DR: In this article, a recursive bosonic quantization technique was introduced for generating parity-time photonic structures that possess hidden symmetries and higher-order exceptional points. But it was shown that perfect state transfer is possible only for certain initial conditions and left and right coherent transports are not symmetric with field amplitudes following two different trajectories.