15 citations · 20 across the 10 of their papers we have counts for
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Non-adiabatic Modal Dynamics around Exceptional Points in an All-Lossy Dual-Mode Optical Waveguide: Towards Chirality Driven Asymmetric Mode-Conversion
Arnab Laha, Abhijit Biswas, Somnath Ghosh
We report a 1D planar optical waveguide with transverse distribution of inhomogeneous loss profile, which exhibits an exceptional point (EP). The waveguide hosts two leaky resonant…
Origin of third order exceptional singularities and its signature in successive state conversion
Sayan Bhattacherjee, Arnab Laha, Somnath Ghosh
We report an open three-state perturbed system with quasi-statically varying Hamiltonian depending on the topological parameters. The effective system hosts two second order except…
Realization of Third Order Exceptional Singularities in a Three level non-Hermitian System: Towards Cascaded State Conversion
Sayan Bhattacherjee, Arnab Laha, Somnath Ghosh
The appearance of topological singularities, namely exceptional points (EPs) is an intriguing feature of parameter-dependent open quantum or wave systems. EPs are the special type…
Three State Quantum System Exhibiting Third Order Exceptional Singularities and Flip-of-States
Sayan Bhattacherjee, Arnab Laha, Somnath Ghosh
A quantum inspired open optical system is mathematically implemented with an analogous three state non-Hermitian Hamiltonian exhibiting two special avoided-resonance-crossings; whe…
All-Lossy Quasi-Guided Dual-Mode Optical Waveguide Exhibiting Exceptional Singularities
Arnab Laha, Abhijit Biswas, Somnath Ghosh
We explore exceptional points (EP) in a dual-mode symmetric planar optical waveguide with transverse variation of inhomogeneous loss profile; where modal evolution alongside an EP…
Exceptional Points in an Specialty Microcavity: Interplay between State-Conversion and Cavity Control Parameters
Arnab Laha, Abhijit Biswas, Somnath Ghosh
Exploiting scattering-matrix in a gain-loss assisted optical-microcavity, interplay between asymmetric-state-conversion and cavity-control parameters around exceptional points is a…