Dynamical sensitivity control of a single-spin quantum sensor

Abstract The Nitrogen-Vacancy (NV) defect in diamond is a unique quantum system that offers precision sensing of nanoscale physical quantities at room temperature beyond the current state-of-the-art. The benchmark parameters for nanoscale magnetometry applications are sensitivity, spectral resolutio...

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Autores principales:	Andrii Lazariev, Silvia Arroyo-Camejo, Ganesh Rahane, Vinaya Kumar Kavatamane, Gopalakrishnan Balasubramanian
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/699e6d3714044c008042924af092c8dc
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spelling	oai:doaj.org-article:699e6d3714044c008042924af092c8dc2021-12-02T16:08:00ZDynamical sensitivity control of a single-spin quantum sensor10.1038/s41598-017-05387-w2045-2322https://doaj.org/article/699e6d3714044c008042924af092c8dc2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05387-whttps://doaj.org/toc/2045-2322Abstract The Nitrogen-Vacancy (NV) defect in diamond is a unique quantum system that offers precision sensing of nanoscale physical quantities at room temperature beyond the current state-of-the-art. The benchmark parameters for nanoscale magnetometry applications are sensitivity, spectral resolution, and dynamic range. Under realistic conditions the NV sensors controlled by conventional sensing schemes suffer from limitations of these parameters. Here we experimentally show a new method called dynamical sensitivity control (DYSCO) that boost the benchmark parameters and thus extends the practical applicability of the NV spin for nanoscale sensing. In contrast to conventional dynamical decoupling schemes, where π pulse trains toggle the spin precession abruptly, the DYSCO method allows for a smooth, analog modulation of the quantum probe’s sensitivity. Our method decouples frequency selectivity and spectral resolution unconstrained over the bandwidth (1.85 MHz–392 Hz in our experiments). Using DYSCO we demonstrate high-accuracy NV magnetometry without \|2π\| ambiguities, an enhancement of the dynamic range by a factor of 4 · 103, and interrogation times exceeding 2 ms in off-the-shelf diamond. In a broader perspective the DYSCO method provides a handle on the inherent dynamics of quantum systems offering decisive advantages for NV centre based applications notably in quantum information and single molecule NMR/MRI.Andrii LazarievSilvia Arroyo-CamejoGanesh RahaneVinaya Kumar KavatamaneGopalakrishnan BalasubramanianNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrii Lazariev Silvia Arroyo-Camejo Ganesh Rahane Vinaya Kumar Kavatamane Gopalakrishnan Balasubramanian Dynamical sensitivity control of a single-spin quantum sensor
description	Abstract The Nitrogen-Vacancy (NV) defect in diamond is a unique quantum system that offers precision sensing of nanoscale physical quantities at room temperature beyond the current state-of-the-art. The benchmark parameters for nanoscale magnetometry applications are sensitivity, spectral resolution, and dynamic range. Under realistic conditions the NV sensors controlled by conventional sensing schemes suffer from limitations of these parameters. Here we experimentally show a new method called dynamical sensitivity control (DYSCO) that boost the benchmark parameters and thus extends the practical applicability of the NV spin for nanoscale sensing. In contrast to conventional dynamical decoupling schemes, where π pulse trains toggle the spin precession abruptly, the DYSCO method allows for a smooth, analog modulation of the quantum probe’s sensitivity. Our method decouples frequency selectivity and spectral resolution unconstrained over the bandwidth (1.85 MHz–392 Hz in our experiments). Using DYSCO we demonstrate high-accuracy NV magnetometry without \|2π\| ambiguities, an enhancement of the dynamic range by a factor of 4 · 103, and interrogation times exceeding 2 ms in off-the-shelf diamond. In a broader perspective the DYSCO method provides a handle on the inherent dynamics of quantum systems offering decisive advantages for NV centre based applications notably in quantum information and single molecule NMR/MRI.
format	article
author	Andrii Lazariev Silvia Arroyo-Camejo Ganesh Rahane Vinaya Kumar Kavatamane Gopalakrishnan Balasubramanian
author_facet	Andrii Lazariev Silvia Arroyo-Camejo Ganesh Rahane Vinaya Kumar Kavatamane Gopalakrishnan Balasubramanian
author_sort	Andrii Lazariev
title	Dynamical sensitivity control of a single-spin quantum sensor
title_short	Dynamical sensitivity control of a single-spin quantum sensor
title_full	Dynamical sensitivity control of a single-spin quantum sensor
title_fullStr	Dynamical sensitivity control of a single-spin quantum sensor
title_full_unstemmed	Dynamical sensitivity control of a single-spin quantum sensor
title_sort	dynamical sensitivity control of a single-spin quantum sensor
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/699e6d3714044c008042924af092c8dc
work_keys_str_mv	AT andriilazariev dynamicalsensitivitycontrolofasinglespinquantumsensor AT silviaarroyocamejo dynamicalsensitivitycontrolofasinglespinquantumsensor AT ganeshrahane dynamicalsensitivitycontrolofasinglespinquantumsensor AT vinayakumarkavatamane dynamicalsensitivitycontrolofasinglespinquantumsensor AT gopalakrishnanbalasubramanian dynamicalsensitivitycontrolofasinglespinquantumsensor
_version_	1718384661050163200

Dynamical sensitivity control of a single-spin quantum sensor

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