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dc.contributor.authorTrifunovic, Luka
dc.contributor.authorTrif, Mircea
dc.contributor.authorWootton, James
dc.contributor.authorLoss, Daniel
dc.contributor.authorDial, Oliver
dc.contributor.authorYacoby, Amir
dc.contributor.authorAbebe, Rediet Tesfaye
dc.date.accessioned2012-02-13T16:42:40Z
dc.date.issued2012
dc.identifier.citationTrifunovic, Luka, Oliver Dial, Mircea Trif, James R. Wooton, Rediet Abebe, Amir Yacoby, and Daniel Loss. 2012. Long-distance spin-spin coupling via floating gates. Physical Review X 2(1): 011006.en_US
dc.identifier.issn2160-3308en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:8157242
dc.description.abstractThe electron spin is a natural two-level system that allows a qubit to be encoded. When localized in a gate-defined quantum dot, the electron spin provides a promising platform for a future functional quantum computer. The essential ingredient of any quantum computer is entanglement—for the case of electron-spin qubits considered here—commonly achieved via the exchange interaction. Nevertheless, there is an immense challenge as to how to scale the system up to include many qubits. In this paper, we propose a novel architecture of a large-scale quantum computer based on a realization of long-distance quantum gates between electron spins localized in quantum dots. The crucial ingredients of such a long-distance coupling are floating metallic gates that mediate electrostatic coupling over large distances. We show, both analytically and numerically, that distant electron spins in an array of quantum dots can be coupled selectively, with coupling strengths that are larger than the electron-spin decay and with switching times on the order of nanoseconds.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofdoi://10.1103/PhysRevX.2.011006en_US
dc.relation.hasversionhttp://arxiv.org/abs/1110.1342v1en_US
dash.licenseOAP
dc.subjectnanophysicsen_US
dc.subjectquantum informationen_US
dc.subjectsemiconductor physicsen_US
dc.subjectmesoscale and nanoscale physicsen_US
dc.subjectquantum physicsen_US
dc.titleLong-Distance Spin-Spin Coupling via Floating Gatesen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalPhysical Review Xen_US
dash.depositing.authorYacoby, Amir
dc.date.available2012-02-13T16:42:40Z
dc.identifier.doi10.1103/PhysRevX.2.011006*
dash.authorsorderedfalse
dash.contributor.affiliatedAbebe, Rediet
dash.contributor.affiliatedDial, Oliver
dash.contributor.affiliatedYacoby, Amir


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