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Optical interface states protected by synthetic weyl points
- 发表刊物：Physical Review X
- 摘要：Weyl fermions have not been found in nature as elementary particles, but they emerge as nodal points in the band structure of electronic and classical wave crystals. Novel phenomena such as Fermi arcs and chiral anomaly have fueled the interest in these topological points which are frequently perceived as monopoles in momentum space. Here, we report the experimental observation of generalized optical Weyl points inside the parameter space of a photonic crystal with a specially designed four-layer unit cell. The reflection at the surface of a truncated photonic crystal exhibits phase vortexes …
- 卷号：7
- 期号：3
- 页面范围：031032
- 是否译文：否
- 发表时间：2017-08-16
