Luqi Yuan, Shanghai Jiao Tong University, China
Benjamin Eggleton, The University of Sydney, Australia
Shanhui Fan, Stanford University, USA
Topological photonics has been undergoing tremendous progress in recent years. A broad variety of photonic platforms have been proposed in theories and demonstrated in experiments to explore the nontrivial topology in not only one and two dimensions but also higher dimensions. Outstanding robust optical phenomena including one-way edge states of light have been shown, leading to the use of both geometrical and topological concepts to manipulate the behavior of light, which is of significant importance for applications such as optical communications and information processing. Discussions of topological photonics with other perspectives, such as the disorder, nonlinearity, and non-Hermitian physics, are also of great interest in the past few years. In particular, the concept of synthetic dimensions has emerged and in fact makes possible to explore physics in a space with a dimensionality that is higher as compared to the apparent geometrical dimensionality of these structures. In this case, the construction of the synthetic space enables unique possibilities for manipulating the internal degrees of freedom of light with exploiting topological effects in new ways. In this special symposium, we focus on recent developments in topological photonics and also its extension into other related areas.