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dc.contributor.authorPal, Arijeet
dc.contributor.authorRashba, Emmanuel
dc.contributor.authorHalperin, Bertrand I.
dc.date.accessioned2016-01-11T21:58:59Z
dc.date.issued2014
dc.identifierQuick submit: 2015-12-18T13:17:27-05:00
dc.identifier.citationPal, Arijeet, Emmanuel I. Rashba, and Bertrand I. Halperin. 2014. “Driven Nonlinear Dynamics of Two Coupled Exchange-Only Qubits.” Physical Review X 4 (1) (January). doi:10.1103/physrevx.4.011012.en_US
dc.identifier.issn2160-3308en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:24082842
dc.description.abstractInspired by the creation of a fast exchange-only qubit [Medford et al., Phys. Rev. Lett. 111, 050501 (2013)], we develop a theory describing the nonlinear dynamics of two such qubits that are capacitively coupled, when one of them is driven resonantly at a frequency equal to its level splitting. We include conditions of strong driving, where the Rabi frequency is a significant fraction of the level splitting, and we consider situations where the splitting for the second qubit may be the same as or different than the first. We demonstrate that coupling between qubits can be detected by reading the response of the second qubit, even when the coupling between them is only of about 1% of their level splittings, and we calculate entanglement between qubits. Patterns of nonlinear dynamics of coupled qubits and their entanglement are strongly dependent on the geometry of the system, and the specific mechanism of interqubit coupling deeply influences dynamics of both qubits. In particular, we describe the development of irregular dynamics in a two-qubit system, explore approaches for inhibiting it, and demonstrate the existence of an optimal range of coupling strength maintaining stability during the operational time.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Society (APS)en_US
dc.relation.isversionofdoi:10.1103/physrevx.4.011012en_US
dc.relation.hasversionhttp://arxiv.org/pdf/1307.5075v2.pdfen_US
dash.licenseLAA
dc.titleDriven Nonlinear Dynamics of Two Coupled Exchange-Only Qubitsen_US
dc.typeJournal Articleen_US
dc.date.updated2015-12-18T18:17:28Z
dc.description.versionVersion of Recorden_US
dc.rights.holderArijeet Pal, Emmanuel I. Rashba, and Bertrand I. Halperin
dc.relation.journalPhys. Rev. Xen_US
dash.depositing.authorRashba, Emmanuel
dc.date.available2016-01-11T21:58:59Z
dc.identifier.doi10.1103/physrevx.4.011012*
dash.contributor.affiliatedPal, Arijeet
dash.contributor.affiliatedHalperin, Bertrand
dash.contributor.affiliatedRashba, Emmanuel


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