Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics

Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics

Non-Hermitian effects can be used to enhance the parameter sensitivity of a system and thus improve metrology applications. Here, the authors present an asymmetric non-Hermitian tight-binding chain where the quantum Fisher information increases exponentially with the system size.

Bibliographic Details
Main Authors: Alexander McDonald, Aashish A. Clerk
Format: Article
Language:English
Published: Nature Publishing Group 2020-10-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-19090-4
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spelling doaj-0b626953680d49548d52574bf75975fe2021-05-11T08:01:46ZengNature Publishing GroupNature Communications2041-17232020-10-0111111210.1038/s41467-020-19090-4Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamicsAlexander McDonald0Aashish A. Clerk1Pritzker School of Molecular Engineering, University of ChicagoPritzker School of Molecular Engineering, University of ChicagoNon-Hermitian effects can be used to enhance the parameter sensitivity of a system and thus improve metrology applications. Here, the authors present an asymmetric non-Hermitian tight-binding chain where the quantum Fisher information increases exponentially with the system size.https://doi.org/10.1038/s41467-020-19090-4
collection DOAJ
language English
format Article
sources DOAJ
author Alexander McDonald
Aashish A. Clerk
spellingShingle Alexander McDonald
Aashish A. Clerk
Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
Nature Communications
author_facet Alexander McDonald
Aashish A. Clerk
author_sort Alexander McDonald
title Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
title_short Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
title_full Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
title_fullStr Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
title_full_unstemmed Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
title_sort exponentially-enhanced quantum sensing with non-hermitian lattice dynamics
publisher Nature Publishing Group
series Nature Communications
issn 2041-1723
publishDate 2020-10-01
description Non-Hermitian effects can be used to enhance the parameter sensitivity of a system and thus improve metrology applications. Here, the authors present an asymmetric non-Hermitian tight-binding chain where the quantum Fisher information increases exponentially with the system size.
url https://doi.org/10.1038/s41467-020-19090-4
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AT aashishaclerk exponentiallyenhancedquantumsensingwithnonhermitianlatticedynamics
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