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Momentum flatband and superluminal propagation in a photonic time Moiré superlattice
Linyang Zou, Hao Hu, Haotian Wu +4
Flat bands typically describe energy bands whose energy dispersion is entirely or almost entirely degenerate. One effective method to form flat bands is by constructing Moiré super…
Realization of Topology-controlled Photonic Cavities in a Valley Photonic Crystal
Bei Yan, Baoliang Liao, Fulong Shi +11
We report an experimental realization of a new type of topology-controlled photonic cavities in valley photonic crystals by adopting judiciously oriented mirrors to localize the va…
Perovskite topological exciton-polariton disclination laser at room temperature
Feng Jin, Subhaskar Mandal, Xutong Wang +2
Topologically nontrivial systems can be protected by band topology in momentum space, as seen in topological insulators and semimetals, or real-space topology, such as in lattice d…
A programmable topological photonic chip
Tianxiang Dai, Anqi Ma, Jun Mao +12
Controlling topological phases of light has allowed experimental observations of abundant topological phenomena and development of robust photonic devices. The prospect of more sop…
Free-electron Brewster radiation
Ruoxi Chen, Jialin Chen, Zheng Gong +7
Free-electron radiation offers an enticing route to create light emission at arbitrary spectral regime. However, this type of light emission is generally weak, which is intrinsical…
Realization of a quadrupole topological insulator phase in a gyromagnetic photonic crystal
Peiheng Zhou, Gui-Geng Liu, Zihao Wang +8
The field of topological photonics was initiated with the realization of a Chern insulator phase in a gyromagnetic photonic crystal (PhC) with broken time-reversal symmetry (T), ho…