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dc.contributor.authorBauch, Erik
dc.contributor.authorHart, Connor
dc.contributor.authorSchloss, Jennifer
dc.contributor.authorTurner, Matthew
dc.contributor.authorBarry, John
dc.contributor.authorKehayias, Pauli
dc.contributor.authorSingh, Swati
dc.contributor.authorWalsworth, Ronald
dc.date.accessioned2020-04-07T10:53:23Z
dc.date.issued2018-07-25
dc.identifierQuick submit: 2018-06-08T13:21:26-0400
dc.identifier.citationBauch, Erik, Connor Hart, Jennifer Schloss, Matthew Turner, John Barry, Pauli Kehayias, Swati Singh, and Ronald Walsworth. 2018. Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control. Physical Review X 8: 031025.en_US
dc.identifier.issn2160-3308en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:42656561*
dc.description.abstractQuantum spin dephasing is caused by inhomogeneous coupling to the environment, with resulting limits to the measurement time and precision of spin-based sensors. The effects of spin dephasing can be especially pernicious for dense ensembles of electronic spins in the solid state, such as nitrogen-vacancy (NV) color centers in diamond. We report the use of two complementary techniques, spin-bath driving, and double quantum coherence magnetometry, to enhance the inhomogeneous spin dephasing time (T∗2) for NV ensembles by more than an order of magnitude. In combination, these quantum control techniques (i) eliminate the effects of the dominant NV spin ensemble dephasing mechanisms, including crystal strain gradients and dipolar interactions with paramagnetic bath spins, and (ii) increase the effective NV gyromagnetic ratio by a factor of two. Applied independently, spin-bath driving and double quantum coherence magnetometry elucidate the sources of spin ensemble dephasing over a wide range of NV and bath spin concentrations. These results demonstrate the longest reported T∗2 in a solid-state electronic spin ensemble at room temperature and outline a path towards NV-diamond dc magnetometers with broadband femtotesla sensitivity.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Society (APS)en_US
dash.licenseOAP
dc.subjectGeneral Physics and Astronomyen_US
dc.titleUltralong Dephasing Times in Solid-State Spin Ensembles via Quantum Controlen_US
dc.typeJournal Articleen_US
dc.date.updated2018-06-08T17:21:29Z
dc.description.versionAccepted Manuscripten_US
dc.relation.journalPhysical Review Xen_US
dash.depositing.authorWalsworth, Ronald
dc.date.available2018
dc.date.available2020-04-07T10:53:23Z
dc.identifier.doi10.1103/physrevx.8.031025
dc.source.journalPhys. Rev. X
dash.source.volume8;3
dash.contributor.affiliatedSingh, Swati
dash.contributor.affiliatedTurner, Matthew
dash.contributor.affiliatedBarry, John
dash.contributor.affiliatedHart, Connor
dash.contributor.affiliatedSchloss, Jennifer
dash.contributor.affiliatedWalsworth, Ronald
dash.contributor.affiliatedKehayias, Pauli


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