Photodynamics and quantum efficiency of germanium vacancy color centers in diamond

Nguyen, M; Nikolay, N; Bradac, C; Kianinia, M; Ekimov, EA; Mendelson, N; Benson, O; Aharonovich, I

Photodynamics and quantum efficiency of germanium vacancy color centers in diamond

Nguyen, M Nikolay, N Bradac, C

Kianinia, M

Ekimov, EA Mendelson, N Benson, O Aharonovich, I

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Publisher:: SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Publication Type:: Journal Article
Citation:: Advanced Photonics, 2019, 1, (6)
Issue Date:: 2019-11-01

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Field	Value	Language
dc.contributor.author	Nguyen, M
dc.contributor.author	Nikolay, N
dc.contributor.author	Bradac, C https://orcid.org/0000-0002-6673-7238
dc.contributor.author	Kianinia, M https://orcid.org/0000-0003-4073-1492
dc.contributor.author	Ekimov, EA
dc.contributor.author	Mendelson, N
dc.contributor.author	Benson, O
dc.contributor.author	Aharonovich, I https://orcid.org/0000-0003-4304-3935
dc.date.accessioned	2022-07-13T06:11:15Z
dc.date.available	2022-07-13T06:11:15Z
dc.date.issued	2019-11-01
dc.identifier.citation	Advanced Photonics, 2019, 1, (6)
dc.identifier.issn	2577-5421
dc.identifier.issn	2577-5421
dc.identifier.uri	http://hdl.handle.net/10453/158858
dc.description.abstract	Color centers in diamond-especially group IV defects-have been advanced as a viable solid-state platform for quantum photonics and information technologies. We investigate the photodynamics and characteristics of germanium-vacancy (GeV) centers hosted in high-pressure high-temperature diamond nanocrystals. Through back-focal plane imaging, we analyze the far-field radiation pattern of the investigated emitters and derive a crossed-dipole emission, which is strongly aligned along one axis. We use this information in combination with lifetime measurements to extract the decay rate statistics of the GeV emitters and determine their quantum efficiency, which we estimated to be ∼ (22 ± 2) %. Our results offer further insight into the photodynamic properties of the GeV center in nanodiamonds and confirm its suitability as a desirable system for quantum technologies.
dc.language	English
dc.publisher	SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
dc.relation	http://purl.org/au-research/grants/arc/DP180100077
dc.relation	http://purl.org/au-research/grants/arc/DE180100810
dc.relation	http://purl.org/au-research/grants/arc/DP190101058
dc.relation.ispartof	Advanced Photonics
dc.relation.isbasedon	10.1117/1.AP.1.6.066002
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Photodynamics and quantum efficiency of germanium vacancy color centers in diamond
dc.type	Journal Article
utslib.citation.volume	1
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-07-13T06:11:12Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	1
utslib.citation.issue	6

Abstract:

Color centers in diamond-especially group IV defects-have been advanced as a viable solid-state platform for quantum photonics and information technologies. We investigate the photodynamics and characteristics of germanium-vacancy (GeV) centers hosted in high-pressure high-temperature diamond nanocrystals. Through back-focal plane imaging, we analyze the far-field radiation pattern of the investigated emitters and derive a crossed-dipole emission, which is strongly aligned along one axis. We use this information in combination with lifetime measurements to extract the decay rate statistics of the GeV emitters and determine their quantum efficiency, which we estimated to be ∼ (22 ± 2) %. Our results offer further insight into the photodynamic properties of the GeV center in nanodiamonds and confirm its suitability as a desirable system for quantum technologies.

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http://hdl.handle.net/10453/158858