Nuclear spin assisted magnetic field angle sensing

Abstract Quantum sensing exploits the strong sensitivity of quantum systems to measure small external signals. The nitrogen-vacancy (NV) center in diamond is one of the most promising platforms for real-world quantum sensing applications, predominantly used as a magnetometer. However, its magnetic f...

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Autores principales:	Ziwei Qiu, Uri Vool, Assaf Hamo, Amir Yacoby
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/c980d470a3de48be996fb6f84a3dcb14
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id	oai:doaj.org-article:c980d470a3de48be996fb6f84a3dcb14
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spelling	oai:doaj.org-article:c980d470a3de48be996fb6f84a3dcb142021-12-02T10:54:16ZNuclear spin assisted magnetic field angle sensing10.1038/s41534-021-00374-62056-6387https://doaj.org/article/c980d470a3de48be996fb6f84a3dcb142021-02-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00374-6https://doaj.org/toc/2056-6387Abstract Quantum sensing exploits the strong sensitivity of quantum systems to measure small external signals. The nitrogen-vacancy (NV) center in diamond is one of the most promising platforms for real-world quantum sensing applications, predominantly used as a magnetometer. However, its magnetic field sensitivity vanishes when a bias magnetic field acts perpendicular to the NV axis. Here, we introduce a different sensing strategy assisted by the nitrogen nuclear spin that uses the entanglement between the electron and nuclear spins to restore the magnetic field sensitivity. This, in turn, allows us to detect small changes in the magnetic field angle relative to the NV axis. Furthermore, based on the same underlying principle, we show that the NV coupling strength to magnetic noise, and hence its coherence time, exhibits a strong asymmetric angle dependence. This allows us to uncover the directional properties of the local magnetic environment and to realize maximal decoupling from anisotropic noise.Ziwei QiuUri VoolAssaf HamoAmir YacobyNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Ziwei Qiu Uri Vool Assaf Hamo Amir Yacoby Nuclear spin assisted magnetic field angle sensing
description	Abstract Quantum sensing exploits the strong sensitivity of quantum systems to measure small external signals. The nitrogen-vacancy (NV) center in diamond is one of the most promising platforms for real-world quantum sensing applications, predominantly used as a magnetometer. However, its magnetic field sensitivity vanishes when a bias magnetic field acts perpendicular to the NV axis. Here, we introduce a different sensing strategy assisted by the nitrogen nuclear spin that uses the entanglement between the electron and nuclear spins to restore the magnetic field sensitivity. This, in turn, allows us to detect small changes in the magnetic field angle relative to the NV axis. Furthermore, based on the same underlying principle, we show that the NV coupling strength to magnetic noise, and hence its coherence time, exhibits a strong asymmetric angle dependence. This allows us to uncover the directional properties of the local magnetic environment and to realize maximal decoupling from anisotropic noise.
format	article
author	Ziwei Qiu Uri Vool Assaf Hamo Amir Yacoby
author_facet	Ziwei Qiu Uri Vool Assaf Hamo Amir Yacoby
author_sort	Ziwei Qiu
title	Nuclear spin assisted magnetic field angle sensing
title_short	Nuclear spin assisted magnetic field angle sensing
title_full	Nuclear spin assisted magnetic field angle sensing
title_fullStr	Nuclear spin assisted magnetic field angle sensing
title_full_unstemmed	Nuclear spin assisted magnetic field angle sensing
title_sort	nuclear spin assisted magnetic field angle sensing
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c980d470a3de48be996fb6f84a3dcb14
work_keys_str_mv	AT ziweiqiu nuclearspinassistedmagneticfieldanglesensing AT urivool nuclearspinassistedmagneticfieldanglesensing AT assafhamo nuclearspinassistedmagneticfieldanglesensing AT amiryacoby nuclearspinassistedmagneticfieldanglesensing
_version_	1718396493897924608

Nuclear spin assisted magnetic field angle sensing

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