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Protecting a Diamond Quantum Memory by Charge State Control

Pfender, Matthias; Aslam, Nabeel; Simon, Patrick; Antonov, Denis; Thiering, Gergo; Burk, Sina; de Oliveira, Felipe; Denisenko, Andrej; Fedder, H.; Meijer, Jan; Doherty, Marcus

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In recent years, solid-state spin systems have emerged as promising candidates for quantum information processing. Prominent examples are the nitrogen-vacancy (NV) center in diamond, phosphorus dopants in silicon (Si:P), rare-earth ions in solids, and VSi-centers in silicon-carbide. The Si:P system has demonstrated that its nuclear spins can yield exceedingly long spin coherence times by eliminating the electron spin of the dopant. For NV centers, however, a proper charge state for storage of...[Show more]

dc.contributor.authorPfender, Matthias
dc.contributor.authorAslam, Nabeel
dc.contributor.authorSimon, Patrick
dc.contributor.authorAntonov, Denis
dc.contributor.authorThiering, Gergo
dc.contributor.authorBurk, Sina
dc.contributor.authorde Oliveira, Felipe
dc.contributor.authorDenisenko, Andrej
dc.contributor.authorFedder, H.
dc.contributor.authorMeijer, Jan
dc.contributor.authorDoherty, Marcus
dc.date.accessioned2020-12-20T20:57:40Z
dc.date.available2020-12-20T20:57:40Z
dc.identifier.issn1530-6984
dc.identifier.urihttp://hdl.handle.net/1885/218341
dc.description.abstractIn recent years, solid-state spin systems have emerged as promising candidates for quantum information processing. Prominent examples are the nitrogen-vacancy (NV) center in diamond, phosphorus dopants in silicon (Si:P), rare-earth ions in solids, and VSi-centers in silicon-carbide. The Si:P system has demonstrated that its nuclear spins can yield exceedingly long spin coherence times by eliminating the electron spin of the dopant. For NV centers, however, a proper charge state for storage of nuclear spin qubit coherence has not been identified yet. Here, we identify and characterize the positively charged NV center as an electron-spin-less and optically inactive state by utilizing the nuclear spin qubit as a probe. We control the electronic charge and spin utilizing nanometer scale gate electrodes. We achieve a lengthening of the nuclear spin coherence times by a factor of 4. Surprisingly, the new charge state allows switching of the optical response of single nodes facilitating full individual addressability.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Chemical Society
dc.sourceNano Letters
dc.titleProtecting a Diamond Quantum Memory by Charge State Control
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume17
dc.date.issued2017
local.identifier.absfor020699 - Quantum Physics not elsewhere classified
local.identifier.ariespublicationu4351680xPUB290
local.type.statusPublished Version
local.contributor.affiliationPfender, Matthias , University of Stuttgart
local.contributor.affiliationAslam, Nabeel, University of Stuttgart
local.contributor.affiliationSimon, Patrick, Technische Universitat Munchen
local.contributor.affiliationAntonov, Denis, University of Stuttgart
local.contributor.affiliationThiering, Gergo, Hungarian Academy of Science
local.contributor.affiliationBurk, Sina, University of Stuttgart
local.contributor.affiliationde Oliveira, Felipe, University of Stuttgart
local.contributor.affiliationDenisenko, Andrej, University of Stuttgart
local.contributor.affiliationFedder, H., University Stuttgart
local.contributor.affiliationMeijer, Jan, Universitat Leipzig
local.contributor.affiliationDoherty, Marcus, College of Science, ANU
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage5931
local.bibliographicCitation.lastpage5937
local.identifier.doi10.1021/acs.nanolett.7b01796
dc.date.updated2020-11-23T10:59:24Z
local.identifier.scopusID2-s2.0-85031099532
local.identifier.thomsonID000413057500009
CollectionsANU Research Publications

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