Precise high-fidelity electron-nuclear spin entangling gates in NV centers via hybrid dynamical decoupling sequences

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dc.contributor.authorDong, Wenzhengen
dc.contributor.authorCalderon-Vargas, F. A.en
dc.contributor.authorEconomou, Sophia E.en
dc.contributor.departmentPhysicsen
dc.date.accessioned2020-11-24T20:41:02Zen
dc.date.available2020-11-24T20:41:02Zen
dc.date.issued2020-07en
dc.description.abstractColor centers in solids, such as the nitrogen-vacancy center in diamond, offer well-protected and well-controlled localized electron spins that can be employed in various quantum technologies. Moreover, the long coherence time of the surrounding spinful nuclei can enable a robust quantum register controlled through the color center. We design pulse sequence protocols that drive the electron spin to generate robust entangling gates with these nuclear memory qubits. We find that compared to using Carr-Purcell-Meiboom-Gill (CPMG) alone, Uhrig decoupling sequence and hybrid protocols composed of CPMG and Uhrig sequences improve these entangling gates in terms of fidelity, spin control range, and spin selectivity. We provide analytical expressions for the sequence protocols and also show numerically the efficacy of our method on nitrogen-vacancy centers in diamond. Our results are broadly applicable to color centers weakly coupled to a small number of nuclear spin qubits.en
dc.description.notesWe thank T Taminiau and Mo Chen for helpful discussions. This work was supported by the NSF (Grant Numbers 183897 and 1741656).en
dc.description.sponsorshipNSFNational Science Foundation (NSF) [183897, 1741656]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1088/1367-2630/ab9bc0en
dc.identifier.issn1367-2630en
dc.identifier.issue7en
dc.identifier.other73059en
dc.identifier.urihttp://hdl.handle.net/10919/100928en
dc.identifier.volume22en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectnitrogen-vacancyen
dc.subjectnuclear spin controlen
dc.subjectdynamical decouplingen
dc.subjectentangling gatesen
dc.subjectdiamonden
dc.subjectcolor centeren
dc.titlePrecise high-fidelity electron-nuclear spin entangling gates in NV centers via hybrid dynamical decoupling sequencesen
dc.title.serialNew Journal of Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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