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 ranging from classical metamaterials to synthetic quantum materials.
Description
Phys. Rev. Lett. 125, 180403 (2020) - Non-Hermitian Topological Sensors
%0 Journal Article
%1 PhysRevLett.125.180403
%A Budich, Jan Carl
%A Bergholtz, Emil J.
%D 2020
%I American Physical Society
%J Phys. Rev. Lett.
%K a
%N 18
%P 180403
%R 10.1103/PhysRevLett.125.180403
%T Non-Hermitian topological sensors
%U https://link.aps.org/doi/10.1103/PhysRevLett.125.180403
%V 125
%X 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 ranging from classical metamaterials to synthetic quantum materials.
@article{PhysRevLett.125.180403,
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 ranging from classical metamaterials to synthetic quantum materials.},
added-at = {2023-10-26T10:54:37.000+0200},
author = {Budich, Jan Carl and Bergholtz, Emil J.},
biburl = {https://www.bibsonomy.org/bibtex/24cf6b56cff93d050785f321474ee0fb3/ctqmat},
day = 29,
description = {Phys. Rev. Lett. 125, 180403 (2020) - Non-Hermitian Topological Sensors},
doi = {10.1103/PhysRevLett.125.180403},
interhash = {5d057f90a268ca7f0d60eaaaca9f5f7e},
intrahash = {4cf6b56cff93d050785f321474ee0fb3},
journal = {Phys. Rev. Lett.},
keywords = {a},
month = {10},
number = 18,
numpages = {7},
pages = 180403,
publisher = {American Physical Society},
timestamp = {2023-10-26T10:54:37.000+0200},
title = {Non-Hermitian topological sensors},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.125.180403},
volume = 125,
year = 2020
}