Yihao Yang

Oct 27, 2024 | nature.com | Ying Li |Yihao Yang |Yidong Chong |Qi Wang |Hongsheng Chen

AbstractBeam shaping and polarization manipulation are of great importance for the design of microcavity lasers. Recently, topological photonic cavities have emerged as excellent platforms for surface-emitting lasers. In this class of lasers, beam engineering has not thus far been extensively studied. Here, we demonstrate how to achieve an intrinsic lateral shift of the beam emitted by a topological laser.

Mar 14, 2024 | nature.com | Zhe Zhang |Yihao Yang |Hongsheng Chen

AbstractHyperbolic lattices are a new type of synthetic materials based on regular tessellations in non-Euclidean spaces with constant negative curvature. While so far, there has been several theoretical investigations of hyperbolic topological media, experimental work has been limited to time-reversal invariant systems made of coupled discrete resonances, leaving the more interesting case of robust, unidirectional edge wave transport completely unobserved.

Apr 8, 2023 | nature.com | Xiang Xi |Bei Yan |Linyun Yang |Jing-Ming Chen |Peiheng Zhou |Perry Ping Shum | +5 more

AbstractChiral edge states that propagate oppositely at two parallel strip edges are a hallmark feature of Chern insulators which were first proposed in the celebrated two-dimensional (2D) Haldane model. Subsequently, counterintuitive antichiral edge states that propagate in the same direction at two parallel strip edges were discovered in a 2D modified Haldane model.