Non-Hermitian Topological Sensors
Mesoscale and Nanoscale Physics
2020-11-03 v3 Instrumentation and Detectors
Optics
Quantum Physics
Abstract
We introduce and study a novel class of sensors whose sensitivity grows exponentially with the size of the device. Remarkably, this drastic enhancement does not rely on any fine-tuning, but is found to be a stable phenomenon immune to local perturbations. Specifically, the physical mechanism behind this striking phenomenon is intimately connected to the anomalous sensitivity to boundary conditions observed in non-Hermitian topological systems. We outline concrete platforms for the practical implementation of these non-Hermitian topological sensors (NTOS) ranging from classical meta-materials to synthetic quantum-materials.
Cite
@article{arxiv.2003.13699,
title = {Non-Hermitian Topological Sensors},
author = {Jan Carl Budich and Emil J. Bergholtz},
journal= {arXiv preprint arXiv:2003.13699},
year = {2020}
}
Comments
Including Supplementary Material