activity
20152026
most citedNon-adiabatic Modal Dynamics around Exceptional Points in an All-Lossy Dual-Mode Optical Waveguide: Towards Chirality Driven Asymmetric Mode-Conversion

34 citations · 181 across the 31 of their papers we have counts for

collaborators

32 papers

physics.optics2026

Dual-state control of lasing and absorption via conjugate exceptional points

Arnab Laha, Somnath Ghosh, Adam Miranowicz +1

Lasing and coherent perfect absorption (CPA) are time-reversed manifestations of non-Hermitian light-matter interactions. While exceptional points (EPs) have been extensively explo…

stat.ME2025

New Tests of Randomness for Circular Data

Shriya Gehlot, Arnab Kumar Laha

Randomness or mutual independence is an important underlying assumption for most widely used statistical methods for circular data. Verifying this assumption is essential to ensure…

stat.ME2025

Evaluating Randomness Assumption: A Novel Graph Theoretic Approach

Shriya Gehlot, Arnab Kumar Laha

Randomness or mutual independence is a fundamental assumption forming the basis of statistical inference across disciplines such as economics, finance, and management. Consequently…

stat.ME2025

Change-point problem: Direct estimation using a geometry inspired identifiable reparameterization

Buddhananda Banerjee, Arnab Kumar Laha

Estimation of mean shift in a temporally ordered sequence of random variables with a possible existence of change-point is an important problem in many disciplines. In the availabl…

math.ST2024

Diffusion on the circle and a stochastic correlation model

Sourav Majumdar, Arnab Kumar Laha

We develop diffusion models for time-varying correlation using stochastic processes defined on the unit circle. Specifically, we study Brownian motion on the circle and the von Mis…

physics.optics2024

Dynamically Encircled Higher-order Exceptional Points in an Optical Fiber

Arpan Roy, Arnab Laha, Abhijit Biswas +3

The unique properties of exceptional point (EP) singularities, arising from non-Hermitian physics, have unlocked new possibilities for manipulating light-matter interactions. A tai…