108 citations · 355 across the 13 of their papers we have counts for
13 papers
Exceptional Topological Signatures of Non-Hermitian Photonic Hopf-Link Braids
Samit Kumar Gupta
Non-Hermitian physics endows the non-Abelian systems with exceptional topology characterized by non-commutative braid patterns. Interplay of distinct competing sources of non-Hermi…
Non-Hermitian Origin of Surface Peregrine Soliton and Its Topological Signatures
Samit Kumar Gupta
A wide range of dynamic wave localization phenomena manifest underlying physical effects in diverse areas of physics which often bear signatures of nontrivial coherent wave structu…
Non-Hermitian Nested Hopf-Links and Conjoint Open-Arcs in Synthetic Non-Abelian Gauge Photonic Lattices
Samit Kumar Gupta
Non-Hermitian physics enriches the topological attributes of non-Abelian systems that are characterized by noncommutative braid patterns. Non-Abelian braiding of the non-Hermitian…
Bound States in the Continuum in Bilayer Photonic Crystal with TE-TM Cross-Coupling
Hong-Fei Wang, Samit Kumar Gupta, Xue-Yi Zhu +3
Bound states in the continuum (BICs) in photonic crystals represent the unique solutions of wave equations possessing an infinite quality-factor. We design a type of bilayer photon…
Optical Lattices with Higher-order Exceptional Points by Non-Hermitian Coupling
Xingping Zhou, Samit Kumar Gupta, Zhong Huang +5
Exceptional points (EPs) are degeneracies in open wave systems with coalescence of at least two energy levels and their corresponding eigenstates. In higher dimensions, more comple…
Experimental Observation of Acoustic Weyl Points and Topological Surface States
Hao Ge, Xu Ni, Yuan Tian +6
Weyl points emerge as topological monopoles of Berry flux in the three-dimensional (3D) momentum space and have been extensively studied in topological semimetals. As the underlyin…