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Pseudospin-2 in photonic chiral borophene
Philip Menz, Haissam Hanafi, Daniel Leykam +2
Pseudospin is an angular momentum degree of freedom introduced in analogy to the real electron spin in the effective massless Dirac-like equation used to describe wave evolution at…
Photonic quantum Hall effects
Daniel Leykam, Daria Smirnova
This article reviews the development of photonic analogues of quantum Hall effects, which have given rise to broad interest in topological phenomena in photonic systems over the pa…
Boosting Topological Zero Modes Using Elastomer Waveguide Arrays
Angelina Frank, Daniel Leykam, Daria A. Smirnova +2
We employ the Su-Schrieffer-Heeger model in elastic polymer waveguide arrays to design and realize travelling topologically protected modes. The observed delocalization of the opti…
Anomalous single-mode lasing induced by nonlinearity and the non-Hermitian skin effect
B. F. Zhu, Q. Wang, D. Leykam +3
Single-mode operation is a desirable but elusive property for lasers operating at high pump powers. Typically, single-mode lasing is attainable close to threshold, but increasing t…