13 citations · 40 across the 11 of their papers we have counts for
12 papers
Black-Hole Ringdown from Photon-Sphere Modes in an Elastic Analogue
Jiaoqing Wang, Chenni Xu, Sophia Purow +2
Quasinormal modes (QNMs) govern the ringdown of black holes, yet their physical origin and experimental accessibility remain limited. Here we create an elastic analogue of a black…
The Spontaneous Cascading Mechanism Behind Critical Phenomena in Self-Coupled Lasers
Jiaoqing Wang, Yael Kfir-Cohen, Chenni Xu +4
The basic physics of lasers is characterized by a second-order continuous phase transition at the critical lasing threshold. Nevertheless, laser bistability with abrupt transitions…
Black hole optical analogue: photon sphere microlasers
Chenni Xu, Aswathy Sundaresan, Nazire-Begüm Kazkal +7
The bell-like ringdown of the gravitational field in the last stage of the merging of massive black holes is now routinely detected on earth by the last generation of gravitational…
Spectral Switches of Light in Curved Space
Suting Ju, Chenni Xu, Li-Gang Wang
Acting as analog models of curved spacetime, surfaces of revolution employed for exploring novel optical effects are followed with great interest nowadays to enhance our comprehens…
Diffraction limit of light in curved space
Jingxuan Zhang, Chenni Xu, Patrick Sebbah +1
Overcoming diffraction limit is crucial for obtaining high-resolution image and observing fine microstructure. With this conventional difficulty still puzzling us and the prosperou…
Nonthermal acceleration radiation of atoms near a black hole in presence of dark energy
Syed Masood A. S. Bukhari, Imtiyaz Ahmad Bhat, Chenni Xu +1
We investigate how dark energy affects atom-field interaction. To this end, we consider acceleration radiation of a freely falling atom close to a Schwarzschild black hole (BH) in…
Black hole mirages: electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals
Andreas Haller, Suraj Hegde, Chen Xu +3
We study electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. We find that the flow of electrons can be guided precisely by judiciously chosen tilt p…
Theory of light propagation in arbitrary two-dimensional curved space
Chenni Xu, Li-Gang Wang
As an analog model of general relativity, optics on some two-dimensional (2D) curved surfaces has been increasingly paid attention to in the past decade. Here, in light of Huygens-…
Ray engineering from chaos to order in two-dimensional optical cavities
Chenni Xu, Li-Gang Wang, Patrick Sebbah
Chaos, namely exponential sensitivity to initial conditions, is generally considered a nuisance, inasmuch as it prevents long-term predictions in physical systems. Here, we present…
Light chaotic dynamics in the transformation from curved to flat surfaces
Chenni Xu, Itzhack Dana, Li-Gang Wang +1
Light propagation on a two-dimensional curved surface embedded in a three-dimensional space has attracted increasing attention as an analog model of four-dimensional curved spaceti…
Pulse dynamics of flexural waves in transformed plates
Kun Tang, Chenni Xu, Sebastien Guenneau +1
Coordinate-transformation-inspired optical devices have been mostly examined in the continuous-wave regime: the performance of an invisibility cloak, which has been demonstrated fo…
Generalization of Wolf Effect of light on Arbitrary Two-Dimensional Surface of Revolution
Chenni Xu, Adeel Abbas, Li-Gang Wang
Investigation of physics on two-dimensional curved surface has significant meaning in study of general relativity, inasmuch as its realizability in experimental analogy and verific…