62 citations · 74 across the 9 of their papers we have counts for
9 papers
Programmable Non-Hermitian Synchronization of Light on a Silicon Photonic Processor
Ze-Sheng Xu, Nan Cheng, Mohammed S. Elmusrati +6
Synchronization is a pervasive collective phenomenon underlying the firing of neurons, the beating of the heart, and the coherent emission of lasers. Across these systems, dissipat…
Observation of Universal Spectral Moments and the Dynamic Dispersive-to-Proliferative Transition
Jia-Xin Zhong, Chang Shu, Nan Cheng +4
In non-Hermitian systems, spectra can be maximally boundary-sensitive, yet bulk physics need not be. Here we experimentally show that spectral moments provide boundary-robust bulk…
Failure of the Goldstone Theorem for Vector Fields and Boundary-Mode Proliferation in Hyperbolic Lattices
Daniel Sela, Nan Cheng, Kai Sun
Hyperbolic lattices extend crystallinity into curved space, where negative curvature and exponentially large boundaries reshape collective excitations beyond Euclidean intuition. I…
Lyapunov exponents explain disorder-induced polarization and soliton teleportation in a mechanical Markov system
Will Stephenson, Nan Cheng, Kai Sun +1
Using a mapping between spatial disorder and temporal stochasticity, we develop a new framework using Lyapunov exponents to explain exotic wave localization and mobility phenomena…
Observation of mechanical kink control and generation via phonons
Kai Qian, Nan Cheng, Francesco Serafin +4
Kinks (or domain walls) are localized transitions between distinct ground states associated with a topological invariant, and are central to many phenomena across physics, from con…
Universal spectral moment theorem and its applications in non-Hermitian systems
Nan Cheng, Chang Shu, Kai Zhang +2
The high sensitivity of the spectrum and wavefunctions to boundary conditions, termed the non-Hermitian skin effect, represents a fundamental aspect of non-Hermitian systems. While…
Backscattering-free edge states below all bands in two-dimensional auxetic media
Wenting Cheng, Kai Qian, Nan Cheng +3
Unidirectional and backscattering-free propagation of sound waves is of fundamental interest in physics, and highly sought-after in engineering. Current strategies utilize topologi…
Geometrically frustrated self-assembly of hyperbolic crystals from icosahedral nanoparticles
Nan Cheng, Kai Sun, Xiaoming Mao
Geometric frustration is a fundamental concept in various areas of physics, and its role in self-assembly processes has recently been recognized as a source of intricate self-limit…
Band theory and boundary modes of high-dimensional representations of infinite hyperbolic lattices
Nan Cheng, Francesco Serafin, James McInerney +3
Periodic lattices in hyperbolic space are characterized by symmetries beyond Euclidean crystallographic groups, offering a new platform for classical and quantum waves, demonstrati…