5 papers
Massive coherent equipartition of light by the geometric phase of null space
Xiangrui Hou, Dongyi Wang, Fangyu Wang +3
Light source is a foundational to photonic science and technology. However, a significant challenge remains in generating and distributing coherent light from a single on-chip sour…
Observation of flat-band skin effect
Xulong Wang, Dongyi Wang, Congwei Lu +4
Symmetry-protected ideal flat bands in one-dimensional (1D) Hermitian lattices are populated by compact localized states (CLS) - a special class of localization with wavefunctions…
Exceptional deficiency of non-Hermitian systems
Zhen Li, Xulong Wang, Rundong Cai +5
Exceptional points (EPs) are non-Hermitian singularities associated with the coalescence of individual eigenvectors accompanied by the degeneracy of their complex energies. Here, w…
Experimental Realization of Special-Unitary Operations in Classical Mechanics by Nonadiabatic Evolutions
Congwei Lu, Xulong Wang, Guancong Ma
Artificial classical wave systems such as wave crystals and metamaterials have demonstrated promising capabilities in simulating a wide range of quantum mechanical phenomena. Yet s…
Finite-temperature topological invariant for higher-order topological insulators
Congwei Lu, Lixiong Wu, Qing Ai
We investigate the effects of temperature on the higher-order topological insulators (HOTIs). The finite-temperature topological invariants for the HOTIs can be constructed by gene…