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dc.contributor.authorPica, Giuseppe
dc.contributor.authorLovett, Brendon William
dc.contributor.authorBhatt, R. N.
dc.contributor.authorSchenkel, T.
dc.contributor.authorLyon, S. A.
dc.date.accessioned2016-02-11T10:40:05Z
dc.date.available2016-02-11T10:40:05Z
dc.date.issued2016-01-14
dc.identifier.citationPica , G , Lovett , B W , Bhatt , R N , Schenkel , T & Lyon , S A 2016 , ' Surface code architecture for donors and dots in silicon with imprecise and nonuniform qubit couplings ' Physical Review. B, Condensed matter and materials physics , vol. 93 , no. 3 , 035306 . DOI: 10.1103/PhysRevB.93.035306en
dc.identifier.issn1098-0121
dc.identifier.otherPURE: 240790645
dc.identifier.otherPURE UUID: e24775a1-bba0-427c-8930-0d91873b7f80
dc.identifier.otherScopus: 84955243076
dc.identifier.urihttp://hdl.handle.net/10023/8197
dc.descriptionThis research was funded by the joint EPSRC (EP/I035536)/ NSF (DMR-1107606) Materials World Network grant (GP, BWL, SAL), the EPSRC grant EP/K025562 (BWL), the NSF MRSEC grant DMR-01420541 (SAL), and the Department of Energy, Office of Basic Energy Sciences grant DE-SC0002140 (RNB) and the DOE Office of Science under Contract No. DE-AC02-05CH11231 (TS). G.P. thanks the University of St. Andrews and EPSRC for a Doctoral Prize Fellowship.en
dc.description.abstractA scaled quantum computer with donor spins in silicon would benefit from a viable semiconductor framework and a strong inherent decoupling of the qubits from the noisy environment. Coupling neighboring spins via the natural exchange interaction according to current designs requires gate control structures with extremely small length scales. We present a silicon architecture where bismuth donors with long coherence times are coupled to electrons that can shuttle between adjacent quantum dots, thus relaxing the pitch requirements and allowing space between donors for classical control devices. An adiabatic SWAP operation within each donor/dot pair solves the scalability issues intrinsic to exchange-based two-qubit gates, as it does not rely on subnanometer precision in donor placement and is robust against noise in the control fields. We use this SWAP together with well established global microwave Rabi pulses and parallel electron shuttling to construct a surface code that needs minimal, feasible local control.en
dc.language.isoeng
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights© 2016 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at http://dx.doi.org/10.1103/PhysRevB.93.035306en
dc.subjectQC Physicsen
dc.subjectCondensed Matter Physicsen
dc.subjectElectronic, Optical and Magnetic Materialsen
dc.subjectNDASen
dc.subject.lccQCen
dc.titleSurface code architecture for donors and dots in silicon with imprecise and nonuniform qubit couplingsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.93.035306
dc.description.statusPeer revieweden


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