Ultralow-Power Cryogenic Thermometry Based on Optical-Transition Broadening of a Two-Level System in Diamond

Chen, Y; White, S; Ekimov, EA; Bradac, C; Toth, M; Aharonovich, I; Tran, TT

Ultralow-Power Cryogenic Thermometry Based on Optical-Transition Broadening of a Two-Level System in Diamond

Chen, Y White, S Ekimov, EA Bradac, C Toth, M

Aharonovich, I

Tran, TT

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Publisher:: American Chemical Society (ACS)
Publication Type:: Journal Article
Citation:: ACS Photonics, 2023
Issue Date:: 2023

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Field	Value	Language
dc.contributor.author	Chen, Y
dc.contributor.author	White, S
dc.contributor.author	Ekimov, EA
dc.contributor.author	Bradac, C
dc.contributor.author	Toth, M https://orcid.org/0000-0003-1564-4899
dc.contributor.author	Aharonovich, I https://orcid.org/0000-0003-4304-3935
dc.contributor.author	Tran, TT
dc.date.accessioned	2023-04-13T04:09:45Z
dc.date.available	2023-04-13T04:09:45Z
dc.date.issued	2023
dc.identifier.citation	ACS Photonics, 2023
dc.identifier.issn	2330-4022
dc.identifier.issn	2330-4022
dc.identifier.uri	http://hdl.handle.net/10453/169770
dc.description.abstract	Cryogenic temperatures are the prerequisite for many advanced scientific applications and technologies. The accurate determination of temperature in this range and at the submicrometer scale is, however, nontrivial. This is due to the fact that temperature reading in cryogenic conditions can be inaccurate due to optically induced heating. Here, we present an ultralow-power, optical thermometry technique that operates at cryogenic temperatures. The technique exploits the temperature-dependent linewidth broadening measured by resonant photoluminescence of a two-level system: a germanium-vacancy color center in a nanodiamond host. The proposed technique achieves a relative sensitivity of ∼20% K-1, at 5 K. This is higher than any other all-optical nanothermometry method. Additionally, it achieves such sensitivities while employing excitation powers of just a few tens of nanowatts, several orders of magnitude lower than other traditional optical thermometry protocols. To showcase the performance of the method, we demonstrate its ability to accurately read out local differences in temperatures at various target locations of a custom-made microcircuit. Our work is a step toward the advancement of nanoscale optical thermometry at cryogenic temperatures.
dc.language	en
dc.publisher	American Chemical Society (ACS)
dc.relation	http://purl.org/au-research/grants/arc/DP190101058
dc.relation	http://purl.org/au-research/grants/arc/CE200100010
dc.relation	http://purl.org/au-research/grants/arc/DE220100487
dc.relation	United States Department of the NavyN629092212028
dc.relation.ispartof	ACS Photonics
dc.relation.isbasedon	10.1021/acsphotonics.2c01622
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.rights	This document is the Accepted Manuscript version of a Published Work that appeared in final form in [ACS Photonics, 2023], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [http://doi.org/10.1021/acsphotonics.2c01622 , see http://pubs.acs.org/page/policy/articlesonrequest/index.html].”
dc.subject	0205 Optical Physics, 0206 Quantum Physics, 0906 Electrical and Electronic Engineering
dc.title	Ultralow-Power Cryogenic Thermometry Based on Optical-Transition Broadening of a Two-Level System in Diamond
dc.type	Journal Article
utslib.for	0205 Optical Physics
utslib.for	0206 Quantum Physics
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - MTEE - Research Centre Materials and Technology for Energy Efficiency
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
utslib.copyright.embargo	2024-03-06T00:00:00+1000Z
dc.date.updated	2023-04-13T04:09:44Z
pubs.publication-status	Published

Abstract:

Cryogenic temperatures are the prerequisite for many advanced scientific applications and technologies. The accurate determination of temperature in this range and at the submicrometer scale is, however, nontrivial. This is due to the fact that temperature reading in cryogenic conditions can be inaccurate due to optically induced heating. Here, we present an ultralow-power, optical thermometry technique that operates at cryogenic temperatures. The technique exploits the temperature-dependent linewidth broadening measured by resonant photoluminescence of a two-level system: a germanium-vacancy color center in a nanodiamond host. The proposed technique achieves a relative sensitivity of ∼20% K-1, at 5 K. This is higher than any other all-optical nanothermometry method. Additionally, it achieves such sensitivities while employing excitation powers of just a few tens of nanowatts, several orders of magnitude lower than other traditional optical thermometry protocols. To showcase the performance of the method, we demonstrate its ability to accurately read out local differences in temperatures at various target locations of a custom-made microcircuit. Our work is a step toward the advancement of nanoscale optical thermometry at cryogenic temperatures.

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http://hdl.handle.net/10453/169770