Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator

The stability and outstanding coherence of dopants and other atomlike defects in tailored host crystals make them a leading platform for the implementation of distributed quantum information processing and sensing in quantum networks. Albeit the required efficient light-matter coupling can be achiev...

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Autores principales:	Benjamin Merkel, Alexander Ulanowski, Andreas Reiserer
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2020
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/5461bbceb57b4204956a10d4101469b1
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spelling	oai:doaj.org-article:5461bbceb57b4204956a10d4101469b12021-12-02T12:43:10ZCoherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator10.1103/PhysRevX.10.0410252160-3308https://doaj.org/article/5461bbceb57b4204956a10d4101469b12020-11-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.10.041025http://doi.org/10.1103/PhysRevX.10.041025https://doaj.org/toc/2160-3308The stability and outstanding coherence of dopants and other atomlike defects in tailored host crystals make them a leading platform for the implementation of distributed quantum information processing and sensing in quantum networks. Albeit the required efficient light-matter coupling can be achieved via the integration into nanoscale resonators, in this approach the proximity of interfaces is detrimental to the coherence of even the least-sensitive emitters. Here, we establish an alternative: By integrating a 19 μm thin crystal into a cryogenic Fabry-Perot resonator with a quality factor of 9×10^{6}, we achieve a two-level Purcell factor of 530(50). In our specific system, erbium-doped yttrium orthosilicate, this leads to a 59(6)-fold enhancement of the emission rate with an out-coupling efficiency of 46(8)%. At the same time, we demonstrate that the emitter properties are not degraded in our approach. We thus observe ensemble-averaged optical coherence up to 0.54(1) ms, which exceeds the 0.19(2) ms lifetime of dopants at the cavity field maximum. While our approach is also applicable to other solid-state quantum emitters, such as color centers in diamond, our system emits at the minimal-loss wavelength of optical fibers and thus enables coherent and efficient nodes for long-distance quantum networks.Benjamin MerkelAlexander UlanowskiAndreas ReisererAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 10, Iss 4, p 041025 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Benjamin Merkel Alexander Ulanowski Andreas Reiserer Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
description	The stability and outstanding coherence of dopants and other atomlike defects in tailored host crystals make them a leading platform for the implementation of distributed quantum information processing and sensing in quantum networks. Albeit the required efficient light-matter coupling can be achieved via the integration into nanoscale resonators, in this approach the proximity of interfaces is detrimental to the coherence of even the least-sensitive emitters. Here, we establish an alternative: By integrating a 19 μm thin crystal into a cryogenic Fabry-Perot resonator with a quality factor of 9×10^{6}, we achieve a two-level Purcell factor of 530(50). In our specific system, erbium-doped yttrium orthosilicate, this leads to a 59(6)-fold enhancement of the emission rate with an out-coupling efficiency of 46(8)%. At the same time, we demonstrate that the emitter properties are not degraded in our approach. We thus observe ensemble-averaged optical coherence up to 0.54(1) ms, which exceeds the 0.19(2) ms lifetime of dopants at the cavity field maximum. While our approach is also applicable to other solid-state quantum emitters, such as color centers in diamond, our system emits at the minimal-loss wavelength of optical fibers and thus enables coherent and efficient nodes for long-distance quantum networks.
format	article
author	Benjamin Merkel Alexander Ulanowski Andreas Reiserer
author_facet	Benjamin Merkel Alexander Ulanowski Andreas Reiserer
author_sort	Benjamin Merkel
title	Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
title_short	Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
title_full	Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
title_fullStr	Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
title_full_unstemmed	Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator
title_sort	coherent and purcell-enhanced emission from erbium dopants in a cryogenic high-q resonator
publisher	American Physical Society
publishDate	2020
url	https://doaj.org/article/5461bbceb57b4204956a10d4101469b1
work_keys_str_mv	AT benjaminmerkel coherentandpurcellenhancedemissionfromerbiumdopantsinacryogenichighqresonator AT alexanderulanowski coherentandpurcellenhancedemissionfromerbiumdopantsinacryogenichighqresonator AT andreasreiserer coherentandpurcellenhancedemissionfromerbiumdopantsinacryogenichighqresonator
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Coherent and Purcell-Enhanced Emission from Erbium Dopants in a Cryogenic High-Q Resonator

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