463 citations · 1.1k across the 13 of their papers we have counts for
14 papers
Observing parity-time symmetry in diffusive systems
Pei-Chao Cao, Ran Ju, Dong Wang +6
Phase modulation has scarcely been mentioned in diffusive systems since the diffusion process does not carry momentum like waves. Recently, the non-Hermitian physics provides a new…
Observation of Non-Hermitian Skin Effect in Thermal Diffusion
Yun-Kai Liu, Pei-Chao Cao, Minghong Qi +4
The paradigm shift of the Hermitian systems into the non-Hermitian regime profoundly modifies the inherent topological property, leading to various unprecedented effects such as th…
Demonstration of acoustic high-order Stiefel-Whitney semimetal in bilayer graphene sonic crystals
Xiao Xiang, Xiang Ni, Feng Gao +4
Recently, higher-order topological phases have endowed materials many exotic topological phases. For three-dimensional (3D) higher-order topologies, it hosts topologically protecte…
Chiral and non-chiral swift mode conversion near an exception point with dynamic adiabaticity engineering
Dong Wang, Wen-Xi Huang, Bo Zhou +7
The eigenvalue of a non-Hermitian Hamiltonian often forms a self-intersecting Riemann surface, leading to a unique mode conversion phenomenon when the Hamiltonian evolves along cer…
Loss compensation and super-resolution with excitations at complex frequencies
Seunghwi Kim, Yu-Gui Peng, Simon Yves +1
Abbe diffraction limit fundamentally bounds the resolution of conventional optical imaging and spectroscopic systems. Along the years, several schemes have been introduced to overc…
Acoustic mirror Chern insulator with projective parity-time symmetry
Xiao Xiang, Feng Gao, Yugui Peng +3
In condensed matter physics, symmetry profoundly governs the fundamentals of topological matter. The emergence of new topological phase is typically linked to the enrichment of sym…
Scalable Metagrating for Efficient Ultrasonic Focusing
Yan Kei Chiang, Li Quan, Yugui Peng +4
Acoustic focusing plays a pivotal role in a wide variety of applications ranging from medical science to nondestructive testing. Previous works have shown that acoustic metagrating…
Reciprocity of thermal diffusion in time-modulated systems
Jiaxin Li, Ying Li, Pei-Chao Cao +6
The reciprocity principle governs the symmetry in transmission of electromagnetic and acoustic waves, as well as the diffusion of heat between two points in space, with important c…
Experimental Observation of Efficient Nonreciprocal Mode Transitions via Spatiotemporally-Modulated Acoustic Metamaterials
Zhaoxian Chen, Yugui Peng, Haoxiang Li +7
In lossless acoustic systems, mode transitions are always time-reversible, consistent with Lorentz reciprocity, giving rise to symmetric sound manipulation in space-time. To overco…
Probability-Density-Based Deep Learning Paradigm for the Fuzzy Design of Functional Metastructures
Ying-Tao Luo, Peng-Qi Li, Dong-Ting Li +7
In quantum mechanics, a norm squared wave function can be interpreted as the probability density that describes the likelihood of a particle to be measured in a given position or m…
Spectrum Cascade Bloch Oscillations in Temporally Modulated Acoustics
Chengzhi Qin, Yugui Peng, Ying Li +4
Bloch oscillations (BOs) refer to a periodically oscillatory motion of particle in lattice systems driven by a constant force. By temporally modulating acoustic waveguides, BOs can…
Experimental Realization of Acoustic Chern Insulator
Yifan Zhu, Yugui Peng, Xudong Fan +4
Topological insulators are new states of matter in which the topological phase originates from symmetry breaking. Recently, time-reversal invariant topological insulators were demo…
Frequency manipulation of light by photonic gauge potentials
Chengzhi Qin, Feng Zhou, Yugui Peng +6
The ability to manipulate the frequency of light is of great importance in both fundamental quantum sciences and practical applications. Traditional method for frequency conversion…
Topologically protected acoustic helical edge states and interface states in strongly coupled metamaterial ring lattices
Xue-Feng Zhu, Yu-Gui Peng, Xiang-Yuan Yu +4
Time reversal (T) invariant topological insulator is widely recognized as one of the fundamental discoveries in condensed matter physics, for which the most fascinating hallmark is…