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Active Control of Topological Exceptional Points in Non-Hermitian Metasurfaces
Parul Sharma, Sobhan Subhra Mishra, Yash Gupta +4
Active control and ultrafast switching of non-Hermitian photonic systems are essential for next-generation reconfigurable optical technologies. Here, we demonstrate dynamic tempora…
Electrically Tunable Terahertz Chirality from Quantum Geometry
Sobhan Subhra Mishra, Thomas CaiWei Tan, Faxian Xiu +1
Quantum geometry encoded in the momentum space structure of electronic wavefunctions, governs charge dynamics through Berry curvature, enabling unconventional transport and optical…
Non-Equilibrium Orbital Transport in Terahertz Optorbitronics
Sobhan Subhra Mishra, Ranjan Singh
Modern information technologies rely on controlling the flow of electrons through their charge and spin. A rapidly emerging alternative is to use the orbital motion of electrons, t…